Wednesday, January 20, 2010

Liburan Sehat, Ceria dan Cerdas

liburan.gifLiburan menjadi ajang melepaskan kepenatan dan rutinitas aktivitas sehari-hari.  Bahkan liburan dapat menjadi pemasok energi baru dari kejenuhan.  Tak hanya dibutuhkan orang dewasa, anak pun butuh sensasi liburan yang menurut pendapat beberapa ahli mampu menyegarkan kembali pikiran dan tubuhnya.  Sayangnya, seringkali orangta tidak memahaminya.  Tak jarang orangtua tetap membebani anak dengan beberapa kewajiban, seperti mengerjakan PR dan lainnya.  Hal ini yang membuat anak kurang dapat menikmati waktu libur mereka.

Selain menyegarkan pikiran dan tubuh, liburan merupakan kesempatan bagi orang tua untuk menguatkan hubungan orangtua dan anak.  Dengan membiarkan anak seharian mengisi hari liburnya di depan TV, playstation, ataupun komputer, berarti menutup kesempatan anak untuk memperkaya pengalaman dan memperluas wawasan anak.

Berikut alternatif bagi orang tua untuk mengajak anaknya berlibur yang diklarifikasikan oleh Psikolog, Jacinta F Rini dalam artikel Mengelola Liburan Anak.

Liburan Ilmiah
Membawa anak pergi ke planetarium Taman Ismail Marzuki, Museum Geologi di Kota Bogor, Kebun Raya Bogor, Museum Geologi di Bandung, Boscha di Lembang, dll. Bisa juga mengajak anak pergi ke pasar untuk memberi pengalaman langsung proses jual beli di pasar.  Dengan begitu liburan kali ini bisa menjadi ajang menimba ilmu.

Liburan Kreatif dan Inovatif
Mengajak anak ke tempat art & craft center untuk belajar teknik-teknik seni yang menghasilkan karya yang membuat mereka bangga dapat mengarahkan dan membangkitkan kreativitas anak dengan menstimulasi imajinasi mereka.  Mengikuti kelas memasak bisa juga menjadi alternatif liburan kreatif dan inovatif.

Liburan Empati dan Sosial
Mengunjungi panti asuhan atau panti jompo merupakan kegiatan liburan yang relatif murah dan mudah, namun memiliki nilai sosial tinggi.  Kesempatan bagi orangtua untuk membuka pengertian anak dan menanamkan nilai moral dengan mengasihi sesama.  Dengan memberi motivasi pada anak bahwa hidup itu penuh tantangan yang harus bisa dihadapi dengan belajar, bekerja, berdoa dan berhati bersih.

Liburan Petualangan
Merencanakan bersama anak pergi ke perkebunan teh, kebun raya, kebun binatang, sawah, pemancingan, outbound, air terjun atau ke peternakan menjadi liburan yang penuh dengan petualangan.  Selain itu anak akan belajar menghargai apa yang dihasilkan oleh alam.

Thursday, December 31, 2009

Ecology of Komodo

The Komodo dragon prefers hot and dry places, and typically lives in dry open grassland, savanna, and tropical forest at low elevations. As an ectotherm, it is most active in the day, although it exhibits some nocturnal activity. Komodo dragons are largely solitary, coming together only to breed and eat. They are capable of running rapidly in brief sprints up to 20 kilometres per hour (12.4 mph), diving up to 4.5 metres (15 ft), and climbing trees proficiently when young through use of their strong claws.[11] To catch prey that is out of reach, the Komodo dragon may stand on its hind legs and use its tail as a support.[17] As the Komodo dragon matures, its claws are used primarily as weapons, as its great size makes climbing impractical.[12]


For shelter, the Komodo dragon digs holes that can measure from 1–3 metres (3–10 ft) wide with its powerful forelimbs and claws.[18] Because of its large size and habit of sleeping in these burrows, it is able to conserve body heat throughout the night and minimize its basking period the morning after.[19] The Komodo dragon typically hunts in the afternoon, but stays in the shade during the hottest part of the day.[20] These special resting places, usually located on ridges with a cool sea breeze, are marked with droppings and are cleared of vegetation. They also serve as a strategic location from which to ambush deer.[21]

Diet


Komodo dragons on RincaKomodo dragons are carnivores. Although they eat mostly carrion,[4] they will also ambush live prey with a stealthy approach. When suitable prey arrives near a dragon's ambush site, it will suddenly charge at the animal and go for the underside or the throat.[12] It is able to locate its prey using its keen sense of smell, which can locate a dead or dying animal from a range of up to 9.5 kilometers (6 miles).[12] Komodo dragons have also been observed knocking down large pigs and deer with their strong tail.[22]

Komodo dragons eat by tearing large chunks of flesh and swallowing them whole while holding the carcass down with their forelegs. For smaller prey up to the size of a goat, their loosely articulated jaws, flexible skull, and expandable stomach allow it to swallow its prey whole. The vegetable contents of the stomach and intestines are typically avoided.[21] Copious amounts of red saliva that the Komodo dragons produce help to lubricate the food, but swallowing is still a long process (15–20 minutes to swallow a goat). Komodo dragons may attempt to speed up the process by ramming the carcass against a tree to force it down its throat, sometimes ramming so forcefully that the tree is knocked down.[21] To prevent itself from suffocating while swallowing, it breathes using a small tube under the tongue that connects to the lungs.[12] After eating up to 80 percent of its body weight in one meal,[6] it drags itself to a sunny location to speed digestion, as the food could rot and poison the dragon if left undigested for too long. Because of their slow metabolism, large dragons can survive on as little as 12 meals a year.[12] After digestion, the Komodo dragon regurgitates a mass of horns, hair, and teeth known as the gastric pellet, which is covered in malodorous mucus. After regurgitating the gastric pellet, it rubs its face in the dirt or on bushes to get rid of the mucus, suggesting that it, like humans, does not relish the scent of its own excretions.[12]

A young Komodo dragon photographed on Rinca feeding on a water buffalo carcassThe largest animals generally eat first, while the smaller ones follow a hierarchy. The largest male asserts his dominance and the smaller males show their submission by use of body language and rumbling hisses. Dragons of equal size may resort to "wrestling". Losers usually retreat though they have been known to be killed and eaten by victors.[12]

Komodo excrement is mostly white as the stomach is not capable of digesting the calcium found in the bones of the animals they eat.The Komodo dragon's diet is wide-ranging, and includes invertebrates, other reptiles (including smaller Komodo dragons), birds, bird eggs, small mammals, monkeys, wild boar, goats, deer, horses, and water buffalo.[23] Young Komodos will eat insects, eggs, geckos, and small mammals.[4] Occasionally they consume humans and human corpses, digging up bodies from shallow graves.[17] This habit of raiding graves caused the villagers of Komodo to move their graves from sandy to clay ground and pile rocks on top of them to deter the lizards.[21] The Komodo dragon may have evolved to feed on the extinct dwarf elephant Stegodon that once lived on Flores, according to evolutionary biologist Jared Diamond.[24] The Komodo dragon has also been observed intentionally startling a pregnant deer in the hopes of a miscarriage whose remains they can eat, a technique that has also been observed in large African predators.[24]

Because the Komodo dragon does not have a diaphragm, it cannot suck water when drinking, nor can it lap water with its tongue. Instead, it drinks by taking a mouthful of water, lifting its head, and letting the water run down its throat.[12] When it comes to hunting the lizard is very picky, but will eat any type of carrion.


Saliva


A sleeping Komodo dragon. Its large, curved claws are used in fighting and eating.Auffenberg described the Komodo dragon as having septic pathogens in its saliva, specifically the bacteria: Escherichia coli, Staphylococcus sp., Providencia sp., Proteus morgani and P. mirabilis.[25] He noted that while these pathogens can be found in the mouths of wild Komodo dragons, they disappear from the mouths of captive animals, due to a cleaner diet.[25][26] This was verified by taking mucous samples from the external gum surface of the upper jaw of two freshly captured individuals.[25][26] Saliva samples were analyzed by researchers at the University of Texas who found 57 different strains of bacteria growing in the mouths of three wild Komodo dragons including Pasteurella multocida.[9][27] The rapid growth of this bacteria was noted by Fredeking: "Normally it takes about three days for a sample of P. multocida to cover a petri dish; ours took eight hours. We were very taken aback by how virulent these strains were".[28] This study supported the observation that wounds inflicted by the Komodo dragon are often associated with sepsis and subsequent infections in prey animals.[27]

In late 2005, researchers at the University of Melbourne speculated that the perentie (Varanus giganteus), other species of monitor, and agamids may be somewhat venomous. The team believes that the immediate effects of bites from these lizards were caused by mild envenomation. Bites on human digits by a lace monitor (V. varius), a Komodo dragon, and a spotted tree monitor (V. scalaris) all produced similar effects: rapid swelling, localized disruption of blood clotting, and shooting pain up to the elbow, with some symptoms lasting for several hours.[29]

In 2009, the same researchers published further evidence demonstrating that Komodo dragons possess a venomous bite. MRI scans of a preserved skull showed the presence of two venom glands in the lower jaw. They extracted one of these glands from the head of a terminally ill specimen in the Singapore Zoological Gardens, and found that it secreted a venom containing several different toxic proteins. The known functions of these proteins include inhibition of blood clotting, lowering of blood pressure, muscle paralysis, and the induction of hypothermia, leading to shock and loss of consciousness in envenomated prey.[30][31] As a result of the discovery, the previous theory that bacteria were responsible for the deaths of komodo victims was disputed.[32]

Kurt Schwenk, an evolutionary biologist at the University of Connecticut finds the discovery of these glands intriguing, but considers most of the evidence for venom in the study to be "meaningless, irrelevant, incorrect or falsely misleading". Even if the lizards have venomlike proteins in their mouths, Schwenk argues, they may be using them for a different function, and he doubts that venom is necessary to explain the effect of a Komodo dragon bite, arguing that shock and blood loss are the primary factors.[33][34]

Reproduction

Mating occurs between May and August, with the eggs laid in September.[9] During this period, males fight over females and territory by grappling with one another upon their hind legs with the loser eventually being pinned to the ground. These males may vomit or defecate when preparing for the fight.[17] The winner of the fight will then flick his long tongue at the female to gain information about her receptivity.[6] Females are antagonistic and resist with their claws and teeth during the early phases of courtship. Therefore, the male must fully restrain the female during coitus to avoid being hurt. Other courtship displays include males rubbing their chins on the female, hard scratches to the back, and licking.[35] Copulation occurs when the male inserts one of his hemipenes into the female's cloaca.[15] Komodo dragons may be monogamous and form "pair bonds", a rare behavior for lizards.[17]


A Komodo dragon with its long tail and claws fully visibleThe female lays her eggs in burrows cut into the side of a hill or in the abandoned nesting mounds of the Orange-footed Scrubfowl (a moundbuilder or megapode), with a preference for the abandoned mounds.[36] Clutches contain an average of 20 eggs which have an incubation period of 7–8 months.[17] The female lies on the eggs to incubate and protect them until they hatch around April, at the end of the rainy season when insects are plentiful. Hatching is an exhausting effort for the pups, who break out of their eggshells with an egg tooth that falls off soon after. After cutting out the hatchlings may lie in their eggshells for hours before starting to dig out of the nest. They are born quite defenseless, and many are eaten by predators.[12]

Young Komodo dragons spend much of their first few years in trees, where they are relatively safe from predators, including cannibalistic adults, who make juvenile dragons 10% of their diet.[17] According to David Attenborough, the habit of cannibalism may be advantageous in sustaining the large size of adults, as medium-sized prey on the islands is rare.[22] When the young must approach a kill, they roll around in fecal matter and rest in the intestines of eviscerated animals to deter these hungry adults.[17] Komodo dragons take about three to five years to mature, and may live for up to 50 years.[18]

Parthenogenesis

Main article: Parthenogenesis


A Komodo dragon at London Zoo named Sungai laid a clutch of eggs in late 2005 after being separated from male company for more than two years. Scientists initially assumed that she had been able to store sperm from her earlier encounter with a male, an adaptation known as superfecundation.[37] On December 20, 2006, it was reported that Flora, a captive Komodo dragon living in the Chester Zoo in England, was the second known Komodo dragon to have laid unfertilized eggs: she laid 11 eggs, and 7 of them hatched, all of them male.[38] Scientists at Liverpool University in England performed genetic tests on three eggs that collapsed after being moved to an incubator, and verified that Flora had never been in physical contact with a male dragon. After Flora's eggs' condition had been discovered, testing showed that Sungai's eggs were also produced without outside fertilization.[39]

A parthenogenetic baby Komodo dragon, Chester Zoo, EnglandKomodo dragons have the ZW chromosomal sex-determination system, as opposed to the mammalian XY system. Male progeny prove that Flora's unfertilized eggs were haploid (n) and doubled their chromosomes later to become diploid (2n) (by being fertilized by a polar body, or by chromosome duplication without cell division), rather than by her laying diploid eggs by one of the meiosis reduction-divisions in her ovaries failing). When a female Komodo dragon (with ZW sex chromosomes) reproduces in this manner, she provides her progeny with only one chromosome from each of her pairs of chromosomes, including only one of her two sex chromosomes. This single set of chromosomes is duplicated in the egg, which develops parthenogenetically. Eggs receiving a Z chromosome become ZZ (male); those receiving a W chromosome become WW and fail to develop.[40][41]

It has been hypothesized that this reproductive adaptation allows a single female to enter an isolated ecological niche (such as an island) and by parthenogenesis produce male offspring, thereby establishing a sexually reproducing population (via reproduction with her offspring that can result in both male and female young).[40] Despite the advantages of such an adaptation, zoos are cautioned that parthenogenesis may be detrimental to genetic diversity.[42]

On January 31, 2008, the Sedgwick County Zoo in Wichita, Kansas became the first zoo in the Americas to document parthenogenesis in Komodo dragons. The zoo has two adult female Komodo dragons, one of which laid about 17 eggs on May 19–20, 2007. Only two eggs were incubated and hatched due to space issues; the first hatched on January 31, 2008 while the second hatched on February 1. Both hatchlings were males.[43][44]

source : wikipedia.org

The Komodo dragon


The Komodo dragon (Varanus komodoensis) is a species of lizard that inhabits the islands of Komodo, Rinca, Flores, and Gili Motang in Indonesia.[3] A member of the monitor lizard family (Varanidae), it is the largest living species of lizard, growing to an average length of 2 to 3 metres (6.6 to 9.8 ft) and weighing around 70 kilograms (150 lb). Their unusual size is attributed to island gigantism, since there are no other carnivorous animals to fill the niche on the islands where they live; their large size is also explained by the Komodo dragon's low metabolic rate.[4][5] As a result of their size, these lizards dominate the ecosystems in which they live.[6] Although Komodo dragons eat mostly carrion, they will also hunt and ambush prey including invertebrates, birds, and mammals.




Mating begins between May and August, and the eggs are laid in September. About twenty eggs are deposited in abandoned megapode nests and incubated for seven to eight months, hatching in April, when insects are most plentiful. Young Komodo dragons are vulnerable and therefore dwell in trees, safe from predators and cannibalistic adults. They take around three to five years to mature, and may live as long as fifty years. They are among the rare vertebrates capable of parthenogenesis, in which females may lay viable eggs if males are absent.[7]



Komodo dragons were first recorded by Western scientists in 1910. Their large size and fearsome reputation make them popular zoo exhibits. In the wild their range has contracted due to human activities and they are listed as vulnerable by the IUCN. They are protected under Indonesian law, and a national park, Komodo National Park, was founded to aid protection efforts.

Friday, October 2, 2009

Batik, Traditional Fabric of Indonesia

It would be impossible to visit or live in Indonesia and not be exposed to one of the country's most highly developed art forms, batik. On your first visit to a batik store or factory you will undoubtedly experience an overwhelming stimulation of the senses - due to the many colors, patterns and the actual smell of batik. Only through repeated visits and a bit of study will the types of designs and their origins become apparent.

The word batik is thought to be derived from the word 'ambatik' which translated means 'a cloth with little dots'. The suffix 'tik' means little dot, drop, point or to make dots. Batik may also originate from the Javanese word 'tritik' which describes a resist process for dying where the patterns are reserved on the textiles by tying and sewing areas prior to dying, similar to tie dye techniques. Another Javanese phase for the mystical experience of making batik is “mbatik manah” which means “drawing a batik design on the heart”.

A Brief History

Although experts disagree as to the precise origins of batik, samples of dye resistance patterns on cloth can be traced back 1,500 years ago to Egypt and the Middle East. Samples have also been found in Turkey, India, China, Japan and West Africa from past centuries. Although in these countries people were using the technique of dye resisting decoration, within the textile realm, none have developed batik to its present day art form as the highly developed intricate batik found on the island of Java in Indonesia.

Although there is mention of 'fabrics highly decorated' in Dutch transcripts from the 17th century, most scholars believe that the intricate Javanese batik designs would only have been possible after the importation of finely woven imported cloth, which was first imported to Indonesia from India around the 1800s and afterwards from Europe beginning in 1815. Textile patterns can be seen on stone statues that are carved on the walls of ancient Javanese temples such as Prambanan (AD 800), however there is no conclusive evidence that the cloth is batik. It could possibly be a pattern that was produced with weaving techniques and not dying. What is clear is that in the 19th century batik became highly developed and was well ingrained in Javanese cultural life.

Some experts feel that batik was originally reserved as an art form for Javanese royalty. Certainly it's royal nature was clear as certain patterns were reserved to be worn only by royalty from the Sultan's palace. Princesses and noble women may have provided the inspiration for the highly refined design sense evident in traditional patterns. It is highly unlikely though that they would be involved in any more than the first wax application. Most likely, the messy work of dyeing and subsequent waxings was left to court artisans who would work under their supervision.

Javanese royalty were known to be great patrons of the arts and provided the support necessary to develop many art forms, such as silver ornamentation, wayang kulit (leather puppets) and gamelan orchestras. In some cases the art forms overlap. The Javanese dalang (puppeteer) not only was responsible for the wayang puppets but was also an important source of batik patterns. Wayang puppets are usually made of goat skin, which is then perforated and painted to create the illusion of clothing on the puppet. Used puppets were often sold to eager ladies who used the puppets as guides for their batik patterns. They would blow charcoal through the holes that define the patterns of clothing on the puppets, in order to copy the intricate designs onto the cloth.

Other scholars disagree that batik was only reserved as an art form for royalty, as they also feel its use was prevalent with the rakyat, the people. It was regarded an important part of a young ladies accomplishment that she be capable of handling a canting (the pen-like instrument used to apply wax to the cloth) with a reasonable amount of skill, certainly as important as cookery and other housewifery arts to Central Javanese women.

Selection and Preparation of the Cloth for Batik

Natural materials such as cotton or silk are used for the cloth, so that it can absorb the wax that is applied in the dye resisting process. The fabrics must be of a high thread count (densely woven). It is important that cloth of high quality have this high thread count so that the intricate design qualities of batik can be maintained.

The cloth that is used for batik is washed and boiled in water many times prior to the application of wax so that all traces of starches, lime, chalk and other sizing materials are removed. Prior to the implementation of modern day techniques, the cloth would have been pounded with a wooden mallet or ironed to make it smooth and supple so it could best receive the wax design. With the finer machine-made cotton available today, the pounding or ironing processes can be omitted. Normally men did this step in the batik process.

Strict industry standards differentiate the different qualities of the cloth used today, which include Primissima (the best) and Prima. The cloth quality is often written on the edge of the design. A lesser quality cloth which is often used in Blaco.

Batik Design Tools

Although the art form of batik is very intricate, the tools that are used are still very simple. The canting, believed to be a purely Javanese invention, is a small thin wall spouted copper container (sometimes called a wax pen) that is connected to a short bamboo handle. Normally it is approximately 11 cm. in length. The copper container is filled with melted wax and the artisan then uses the canting to draw the design on the cloth.

Canting have different sizes of spouts (numbered to correspond to the size) to achieve varied design effects. The spout can vary from 1 mm in diameter for very fine detailed work to wider spouts used to fill in large design areas. Dots and parallel lines may be drawn with canting that have up to 9 spouts. Sometimes a wad of cotton is fastened over the mouth of the canting or attached to a stick that acts as a brush to fill in very large areas.

For close-up pictures of canting.

Wajan

The wajan is the container that holds the melted wax. It looks like a small wok. Normally it is made of iron or earthenware. The wajan is placed on a small brick charcoal stove or a spirit burner called an 'anglo'. The wax is kept in a melted state while the artisan is applying the wax to the cloth.

Wax

Different kinds and qualities of wax are used in batik. Common waxes used for batik consist of a mixture of beeswax, used for its malleability, and paraffin, used for its friability. Resins can be added to increase adhesiveness and animal fats create greater liquidity.

The best waxes are from the Indonesian islands of Timor, Sumbawa and Sumatra; three types of petroleum-based paraffin (white, yellow and black) are used. The amounts mixed are measured in grams and vary according to the design. Wax recipes can be very closely guarded secrets. Varying colors of wax make it possible to disguise different parts of the pattern through the various dying stages. Larger areas of the pattern are filled in with wax that is cheaper quality and the higher quality wax is used on the more intricately detailed sections of the design.

The wax must be kept at the proper temperature. A wax that is too cool will clog the spout of the canting. A wax that is too hot will flow too quickly and be uncontrollable. The artisan will often blow into the spout of the canting before applying wax to the cloth in order to clear the canting of any obstructions.

Cap

Creating batik is a very time consuming craft. To meet growing demands and make the fabric more affordable to the masses, in the mid-19th century the . cap. (copper stamp - pronounced chop) was developed. This invention enabled a higher volume of batik production compared to the traditional method which entailed the tedious application of wax by hand with a canting.

Each cap is a copper block that makes up a design unit. Cap are made of 1.5 cm wide copper stripes that are bent into the shape of the design. Smaller pieces of wire are used for the dots. When complete, the pattern of copper strips is attached to the handle.

The cap must be precisely made. This is especially true if the pattern is to be stamped on both sides of the fabric. It is imperative that both sides of the cap are identical so that pattern will be consistent.

Sometimes cap are welded between two grids like pieces of copper that will make a base for the top and the bottom. The block is cut in half at the center so the pattern on each half is identical. Cap vary in size and shape depending on the pattern they are needed for. It is seldom that a cap will exceed 24 cm in diameter, as this would make the handling too difficult.

Men usually handle the application of wax using cap. A piece of cloth that involves a complicated design could require as many as ten sets of cap. The usage of cap, as opposed to canting, to apply the wax has reduced the amount of time to make a cloth.

Today, batik quality is defined by cap or tulis, the second meaning hand-drawn designs which use a canting, or kombinasi, a combination of the two techniques.

Dyes

Traditional colors for Central Javanese batik were made from natural ingredients and consisted primarily of beige, blue, brown and black.

The oldest color that was used in traditional batik making was blue. The color was made from the leaves of the Indigo plant. The leaves were mixed with molasses sugar and lime and left to stand overnight. Sometimes sap from the Tinggi tree was added to act as a fixing agent. Lighter blue was achieved by leaving the cloth in the dye bath for short periods of time. For darker colors, the cloth would be left in the dye bath for days and may have been submerged up to 8 - 10 times a day.

In traditional batik, the second color applied was a brown color called soga. The color could range from light yellow to a dark brown. The dye came from the bark of the Soga tree. Another color that was traditionally used was a dark red color called mengkuda. This dye was created from the leaves of the Morinda Citrifolia.

The final hue depended on how long the cloth was soaked in the dye bath and how often it was dipped. Skilled artisans can create many variations of these traditional colors. Aside from blue, green would be achieved by mixing blue with yellow; purple was obtained by mixing blue and red. The soga brown color mixed with indigo would produce a dark blue-black color.

Design Process

The outline of the pattern is blocked out onto the cloth, traditionally with charcoal or graphite. Traditional batik designs utilize patterns handed down over the generations. It is very seldom that an artisan is so skilled that he can work from memory and would not need to draw an outline of the pattern before applying the wax. Often designs are traced from stencils or patterns called pola. Another method of tracing a pattern onto a cloth is by laying the cloth on a glass table that is illuminated from below which casts a shadow of the pattern onto the cloth. The shadow is then traced with a pencil. In large batik factories today, men usually are in charge of drawing the patterns onto the cloth. Click here to see the step-by-step process of making batik.

Waxing

Once the design is drawn out onto the cloth it is then ready to be waxed. Wax is applied to the cloth over the areas of the design that the artisan wishes to remain the original color of the cloth. Normally this is white or cream.

Female workers sit on a low stool or on a mat to apply the wax with a canting. The fabric that they are working on is draped over light bamboo frames called gawangan to allow the freshly applied wax to cool and harden. The wax is heated in the wajan until it is of the desired consistency. The artisan then dips her canting into the wax to fill the bowl of the canting.

Artisans use the wax to retrace the pencil outline on the fabric. A small drop cloth is kept on the woman. s lap to protect her from hot dripping wax. The stem of the canting is held with the right hand in a horizontal position to prevent any accidental spillage, which greatly reduces the value of the final cloth. The left hand is placed behind the fabric for support. The spout does not touch the fabric, but it held just above the area the artisan is working on. To ensure the pattern is well defined, batik is waxed on both sides. True tulis batik is reversible, as the pattern should be identical on both sides.

The most experienced artisans normally do first waxings. Filling in of large areas may be entrusted to less experienced artisans. Mistakes are very difficult to correct. If wax is accidentally spilt on the cloth, the artisan will try to remove the unwanted wax by sponging it with hot water. Then a heated iron rod with a curved end is used to try and lift off the remaining wax. Spilled wax can never be completely removed so it is imperative that the artisans are very careful.

If the cap method is utilized, this procedure is normally done by men. The cap are dipped into melted wax. Just under the surface of the melted wax is a folded cloth approximately 30 centimeters square. When this cloth is saturated with wax it acts like a stamp pad. The cap is pressed into the fabric until the design side of the cap is coated with wax. The saturated cap is then stamped onto the fabric, leaving the design of the cap. This process is repeated until the entire cloth is covered. Often cap and canting methods are combined on the same piece of cloth.

Better quality batik may be waxed utilizing canting in one part of Indonesia and then sent to another part of Indonesia where the cap part of the process is completed. On better quality cap fabric great care is taken to match the pattern exactly. Lower grade batik is characterized by overlapping lines or lightened colored lines indicating the cap was not applied correctly.

Dyeing

After the initial wax has been applied, the fabric is ready for the first dye bath. Traditionally dying was done in earthenware tubs. Today most batik factories use large concrete vats. Above the vats are ropes with pulleys that the fabric is draped over after it has been dipped into the dye bath.

The waxed fabric is immersed in the dye bath of the first color. The amount of time it is left in the bath determines the hue of the color; darker colors require longer periods or numerous immersions. The fabric is then put into a cold water bath to harden the wax.

When the desired color has been achieved and the fabric has dried, wax is reapplied over the areas that the artisan wishes to maintain the first dye color or another color at a later stage in the dying process.

When an area that has been covered with wax previously needs to be exposed so that it can be dyed, the applied wax is scraped away with a small knife. The area is then sponged with hot water and resized with rice starch before it is re-immersed in the subsequent dye bath.

If a marble effect is desired, the wax is intentionally cracked before being placed in the dye bath. The dye seeps into the tiny cracks that create the fine lines that are characteristic of batik. Traditionally, cracks were a sign of inferior cloth especially on indigo color batik. On brown batik, however, the marble effect was accepted.

The number of colors in batik represents how many times it was immersed in the dye bath and how many times wax had to be applied and removed. A multicolored batik represents a lot more work that a single or two-color piece. Numerous dye processes are usually reflected in the price of the cloth. Nowadays, chemical dyes have pretty much replaced traditional dyes, so colors are endless and much more liberally used.

link :
http://www.expat.or.id/info/batik.html
Batik (Javanese pronunciation: [ˈbateʔ]; Indonesian pronunciation: [ˈbaːtik]; English: /ˈbætɪk/ or /bəˈtiːk/) is cloth which traditionally uses a manual wax-resist dyeing technique. Due to modern advances in the textile industry, the term has been extended to include fabrics which incorporate traditional batik patterns even if they are not produced using the wax-resist dyeing techniques. Silk batik is especially popular.[citation needed]
Javanese traditional batik, especially from Yogyakarta and Surakarta, has special meanings rooted to the Javanese conceptualization of the universe. Traditional colours include indigo, dark brown, and white which represent the three major Hindu Gods (Brahmā, Visnu, and Śiva). This is related to the fact that natural dyes are only available in indigo and brown. Certain patterns can only be worn by nobility; traditionally, wider stripes or wavy lines of greater width indicated higher rank. Consequently, during Javanese ceremonies, one could determine the royal lineage of a person by the cloth he or she was wearing.
Other regions of Indonesia have their own unique patterns which normally take themes from everyday lives, incorporating patterns such as flowers, nature, animals, folklore or people. The colours of pesisir batik, from the coastal cities of northern Java, is especially vibrant, and it absorbs influence from the Javanese, Arab, Chinese and Dutch culture. In the colonial times pesisir batik was a favorite of the Peranakan Chinese, Dutch and Eurasians.
UNESCO designated Indonesian batik, as a Masterpiece of Oral and Intangible Heritage of Humanity on 2nd October, 2009[1].
Batik or fabrics with the traditional batik patterns are also found in several countries such as Malaysia, Japan, China, India, Sri Lanka, Egypt, Nigeria, Senegal, and Singapore. Malaysian batik often displays plants and flowers in basic patterns.

form :
http://en.wikipedia.org/wiki/Batik

BATIK's

Monday, August 10, 2009

Bunaken, Manado - a heaven under the sea

Bunaken, Manado - a heaven under the sea
Filed under Beach, Surf & Dive, Indonesia Amazing Places, Manado Travel Guides


Bunaken is located at the north of the island of Sulawesi, Indonesia. It belongs administratively to the municipality of Manado. Bunaken is part of the Bunaken National Marine Park, which has some of the highest levels of marine biodiversity in the world. Scuba diving attracts many visitors to the island. The Bunaken National Marine Park was formally established in 1991 and is among the first of Indonesia’s growing system of marine parks.

The park covers a total surface area of 890.65 km², 97% of which is overlain by sparkling clear, warm tropical water. The remaining 3% of the park is terrestrial, including the five islands of Bunaken, Manado Tua, Mantehage, Nain and Siladen. Although each of these islands has a special character, it is the aquatic ecosystem that attracts most naturalists.

The waters of Bunaken National Marine Park are extremely deep (1566 m in Manado Bay), clear (up to 35-40 m visibility), refreshing in temperature (27 to 29 °C) Pick any of group of interest - corals, fish, echinoderms or sponges - and the number of families, genera or species is bound to be astonishingly high. For example, 7 of the 8 species of giant clams that occur in the world, occur in Bunaken.

The park has around 70 genera of corals; compare this to a mere 10 in Hawaii. Although the exact number of fish species is unknown, it may be slightly higher than in the Philippines, where 2,500 species, or nearly 70% of all fish species known to the Indo-western Pacific, are found.

Oceanic currents may explain, in part, why Bunaken National Marine Park is such a treasure trove of biodiversity. Northeasternly currents generally sweep through the park but abundant counter currents and gyros related to lunar cycles are believed to be a trap for free swimming larvae. This is particularly true on the south side of the crescent-shaped Bunaken Island, lying in the heart of the park.

A snorkler or diver in the vicinity of Lekuan or Fukui may spot over 33 species of butterfly fish and numerous types of groupers, damsels, wrasses and gobies. The gobies, smallish fish with bulging eyes and modified fins that allow them to attach to hard surfaces, are the most diverse but least known group of fish in the park.

Biologists believe that the abundance of hard corals is crucial in maintaining the high levels of diversity in the park. Hard corals are the architects of the reefs, without them, numerous marine organisms would be homeless and hungry. Many species of fish are closely associated with particular types of corals (folious, branching, massives, etc.) for shelter and egg-laying. Others, like the enormous Bumphead Parrotfish, Balbometopon muricatum, are “coralivores” and depend on hard corals for their sustenance. Bony mouth parts fused into an impressive “beak” allow these gregarious fish to crunch corals like roasted peanuts.


View Larger Map