Species and origin of the pearl

Natural pearls in water mussels, shellfish naturally formed pearl.
Farmed pearls technology promotion before, the world's natural pearl is always dominant. However, its production is very limited. The Middle East is a natural Haizhu purchase market.
The origin of natural seawater pearls in the Persian Gulf (Iran, west, east of Saudi Arbor Persian Gulf), Sri Lanka in the Indian Ocean and Southeast Asia (including Indonesia, Myanmar, the Philippines and Australia and other countries and regions). The waves of Bay of Sri Lanka produced pearls, high quality, usually white, milky white. Has a very strong pearl gloss, the larger particles. Usually people this pearl of the outputs of the two regions known as the Oriental Pearl, referred to as the East Pearl. South Sea Pearl and the region produced. South Sea Pearl and the region producing the color white, bead-shaped circle of larger grain layer is thick, strong pearly luster, also known as the "silver beads, is a rare species in the world, the price level is expensive. Hepu of Guangxi, China has long been rich in natural pearls, its quality, yield. Well-known in China's pearl (Hepu beads) seven natural Zhuchi (white pool, bayberry, blue infants, Pingjiang, monopoly, black mud, spider sand) most the Hepu the southeast coast of the sea area. Venezuela's northern coast, was once a place of abundant natural pearls, naturally from Columbus' discovery of the region, however, one after another away some of the adventurers destroyed the ecological environment and shellfish death exhausted. In addition, Mexico, Panama.
Cultured Pearl
Based on two kinds of pearls artificially cultivated shellfish, mussels and other small pieces of the carrying out of the cells of the graft or implanted beads nuclear. Nuclear-free pearl refers to the shift value cells small pieces to sterile beads shellfish, mussels in vivo by the formation of pearls; a nuclear Pearl is refers to the addition to the shift value cells small piece, but also with the transplanted cells in a small piece insert shell quality pearls nuclear, to make cells small piece of secretion of Pearl claimed hemisphere bred pearl nacre deposition in the nuclear surface, the bead core is spherical, the train pearl, pearl attached attached blister pearl shells, clam shells on, it is called.
According to different aquaculture water into mariculture and freshwater cultured pearls. The type of pearl production is certainly better than natural pearls. And accounted for more than 90% of the pearl market share of trade. Concrete can be divided into:
Saltwater cultured pearls
Pearl color related to the sales price, it is described separately.
(1) marine aquaculture Black Pearl. Known black pearl production in Hawaii, Tahiti, French Polynesia, China Lingshui, Sanya and other places. The individual size of the breeding of the Black Pearl in black dish shellfish considerable length of up to 30 cm, weight 3-4 kg, and thus the pearl farming out particles, generally in more than 10 mm from Polynesia general 12-15 mm, with a maximum of 20.8 mm, beads thick, shiny and strong, dark and black, round shape, is a very high quality.
(2) marine aquaculture white pearls. The origin of the white pearl more, but generally a very small number. CD Japan, China up to the two countries production capacity accounted for 90 percent of world production.
The origin of seawater cultured pearls are mainly distributed in the triple, high and, Ehime, Nagasaki, Hiroshima and Kumamoto and other counties. Which triple by the middle of pearls, is a high-quality beads. Japan's annual output of 40 tons, ranking first in the world, most of the better quality of sea water pearls.
Seawater cultured pearls, place of origin issued in Fangcheng, Qinzhou, Hepu, the North Sea; Guangdong Kang (now known as Leizhou) Xuwen County; Lingshui, Sanya waters. To Hepu beads, quality Luo, Hainan Pearl, with an annual output of about 14 tons.


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Mobile phone charger measure

     Charger product quality is good or bad from its performance, safety requirements and electromagnetic compatibility of three aspects to measure.
A performance. Different types of batteries have different charging requirements, charger charging, the charging current, charging voltage parameters required.

(1) charge: to require a charger is a constant current or constant voltage to charge the battery. The current widespread use of lithium-ion battery charger charging current limiting constant voltage, that is the first limiting charge to the battery limits the charging voltage can be automatically converted to constant voltage charging.

(2) Charging current: specifies the maximum charger output current. The size of the charge current should be applicable to the capacity of the battery size to match the generally should not exceed 1C5A.

(3) The charging voltage: specifies the maximum charger output voltage. Charging voltage depends on the battery charge voltage limit; the nominal voltage of 3.6V Li-Ion battery charging, requiring the maximum charger output voltage is 4.2V (in fact, cell phone use lithium-ion batteries are fitted with a protective device, so the output voltage of the charger can also be slightly higher than 4.2V, but in order to ensure safety, the voltage shall not exceed 4.5V).

2, the safety requirements. Popular terms is to ask the circuit structure of the product, the mechanical structure and electrical properties to meet certain safety requirements, regardless of the product in the normal operation or abnormal (such as output overload or short circuit, the internal component failure or circuit failure, etc.) state, should not endanger the safety of persons and property. To achieve this, the charger product safety requirements (such as electric shock protection performance, insulation performance, temperature, etc.) should be consistent with the requirements of the mandatory national standard GB4943-2001.

3, electromagnetic compatibility. Charger products, electromagnetic compatibility requirements reflected in the electromagnetic disturbance. Electromagnetic disturbance into the conducted disturbances and radiated disturbances. Due to the many advantages of switching power supply, so the charger universal switching power supply circuit. But the high-frequency switching power supply switching device in opening and closing, will produce high-frequency harmonic signal. These high-frequency signals transmitted through the grid through the power terminals or by space radiation, will give the environment electromagnetic pollution, harassment surrounding electronic equipment to work properly, serious may be on the safe operation of power grids and human health have adverse effects. Therefore, in order to reduce the electromagnetic pollution of the environment, the electronic product work its power supply terminal (or interface terminals) harassment voltage and radiated disturbance field strength should be less than a certain limit. For cell phone battery charger, of harassment voltage and the disturbance field strength should be consistent with the requirements of the mandatory national standard GB9254-1998 Class B limits.


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Heart, the story leaked by the ring

Ring more than just decorations, you like to wear what kind of ring, like to wear which fingers will reveal the story of your heart.

For men -

Wear a silver ring that gentle, easy to accommodate others.

Wearing a gold ring were more concerned interests, there will always be a shrewd business mind.

Jade who focus on the quality of taste, so strict.

For the ladies -

Fond of pink diamond or pink coral, emotional and romantic.

Favorite ruby or red tourmaline, who, Some Like It Hot

Like sapphire or aquamarine, within the cold

Like emerald or turquoise, feeling delicate.

Finger with the ring - the ring worn on different fingers, to reflect on the psychological meaning and character.

Hi worn on the index finger, the character more extreme stubbornness.

Fond of wearing the right middle finger, advocating the doctrine of life concept.

Fond of wearing in the left middle finger, a sense of responsibility, the importance of the family.

Fond of wearing on the little finger, there is an inferiority complex.


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What is the phone cable?

       Phone cable, mobile phone board, connect the cable of the phone display, camera, key board and motherboard cable is cable. Display to see things from the motherboard to control the output cable's role here. It is responsible for the transmission of data between the mobile phone board and display.

Characteristics of the phone cable

· Cable small size, light weight, and the board the original design of the cable is used to replace the bulky wiring harness wires. The electronic device assembly in the current patch (cutting-edge) panel, the cable is usually the only solution to meet the miniaturization and mobile requirements. Cable (sometimes referred to as the flexible printed circuit) in the polymer substrate etched copper circuits or printed polymer thick film circuit. For both thin and light, compact and complex devices, their design solutions including multi-layer conductive circuit from one side to the complex three-dimensional assembly. Cable weight and volume than conventional round wire harness to a decrease of 70%. The cable can also increase its strength by using the method of reinforcing material or linings, in order to obtain additional mechanical stability.

· Cable can move, bending, torsion and will not damage the wire, and can comply with different shapes and special package size. The only restriction is that the volume of space. Can withstand millions of times dynamic bend the cable can be applied even within the system of continuous exercise or regular exercise, as part of the functionality of the final product. Rigid PCB solder joint thermal mechanical stress on the role hundreds of times the loop will fail.

Cable with excellent electrical properties, dielectric properties, heat resistance. Low dielectric constant allows rapid signal transmission; good thermal properties make components easy to cool down; a higher glass transition temperature or melting point makes good components at a higher temperature. "

The cable has a higher reliability and quality of assembly. Cable reduced even within the required hardware, such as traditional electronic packaging, solder joints, trunk, floor lines and cables, the cable can provide a higher level of assembly reliability and quality. Because the tradition of complex multiple systems with hardware assembly prone to a higher rate of component dislocation.


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Tips to buy in amber and beeswax

We buy amber and beeswax should be aware of their place of origin, usually divided into five regions.

Produced in Sicily to called SIMETITE, produced in Romania called RUMANITE, are darker and seventies, and sulfide-bearing more of them before with the amount of surviving at least. Crossing the Baltic Sea areas of production of a more solid, good quality and pure transparent precious. Producing areas of Asia to Myanmar soil, called BURMITE, beeswax for many, including square Cabernet. Americas, mainly produced in Dominica and West Indies, to other areas of Morocco and South Africa, the Soviet Union, this H, Canada, South Korea and Spain to the production of the recent natural resin-based.

Usually we buy amber and beeswax bracelets or neck string, should pay special attention to the variety of beads, texture, colors, models, etc. are the same. If the same vulgar gas Qi hand. The most important quality and color should be pure, natural, nourish, even to seamless better.

Old varieties and old workers who can not help but traces of the weathering pattern of the long years, even orifice have a little defect channel oxidation. Beads, government each tablet size and shape made ​​by hand it is inevitable that there are subtle differences, in particular, each bead hole is then does not like the plastic imitation or synthetic products made ​​from mechanical molding method so that exactly the same . (Modern Plastic Imitation of irregular size).

Over-oxidation of some of the old varieties because of the table, so the merchants re-polished bright, in order to attract more buyers, but the seventies treasures surface weathering pattern has been polished exhausted, originally a small hole should be re-drill.

Neck string, available dark brown nylon rope or brown nylon rope (to be mixed with linen before play dates firm) series. The case of varieties with high transparency, should be careful to choose the color of the rope, so as not to affect the amber itself is the true tone and perception.

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Flat-panel terminal detonated IPS LCD panel market

 IPS / FFS wide-angle technology is used for most of the flat-panel terminal. As a result, IPS / FFS LCD panel on the mobile computer market share is increasing, the share will increase to 20 percent by 2015. IPS / FFS LCD panel has been popular on the LCD TV market, in 2011 the share accounted for 30%. Display using IPS / FFS LCD panel so far limited to medical devices and other special purposes, while South Korea's LG Display from 2012 known as the AH-IPS IPS LCD panel to the display market, strategic launch. And ready in the coming years, will display all LCD panel into the IPS. Following LG Display, Samsung Electronics and Taiwan manufacturers have to prepare for the display put on IPS LCD panel. BOE (BOE) for the display put FFS LCD panel. IPS / FFS LCD panel in the display market share of 2011 was 8%, we estimate will increase significantly after 2012, will reach 22 percent by 2015.
Small and medium size market, smart phones, digital cameras, car monitors, cameras and flat-panel terminals are promoting the IPS / FFS LCD panel equipped. According to reports, the cameras equipped with the advance of the IPS / FFS LCD panel display to display photos on the increase in demand for high quality IPS / FFS LCD panel. In the future, these applications on the market, the share of the IPS / FFS LCD panel will continue to increase. And it is expected that the IPS / FFS share of the small and medium size market will continue to increase.

Response to the demand for IPS / FFS, the first 6 to the 8th-generation production line in the production of flat-panel terminal panel

The original IPS LCD panel TV uses more than South Korea's LG Display and Panasonic's 6th generation production line production. 2011, flat end panel production in the first six to eight-generation production line in full swing. South Korea's LG Display and Sharp has begun in the 8th generation production line for the production of flat-panel terminal IPS / FFS LCD panel.

In addition, the different perspectives mode TFT-LCD panel market trends, I will be in the 25 to 26 January 2012 at the "22nd Display Search Forum, according to the latest analysis of information on their point of view.


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special requirements of the jewelry maintenance

Maintenance and jewelery in addition to the above general principles, some jewelry, jewelry because of the different gemstones have different character, so in the maintenance of some special requirements and considerations, are respectively introduced as follows:
(1) diamond, ruby, sapphire, tourmaline, topaz stone (topaz) and other gem jewelry. Hard texture of these gems, able to withstand greater pressure, but they are also common shortcomings - brittleness, diamond and topaz, with cleavage of these gems can not stand the beat, percussion, otherwise they will be with brittle avalanche, or with cleavage cracks along the cleavage direction, or even fragmentation. Keep in mind that even if the hardness of the largest diamond, and can not withstand the impact.
(2) jade jewelry. Although the emerald hard and toughness, with a certain degree of resilience. However, after the processing of jade products, are often thin, by the impact will be damaged.
(3) emerald jewelry. Emerald's hardness is slightly larger than the emerald, but more than the emerald to be brittle, so can not withstand the shock and beat more than the emerald. In addition, the emerald afraid of heat, in a fire will make color fade easily burst at high temperatures.
(4) Opal jewelry. Opal's hardness is lower, should be avoided friction with other items. Opal contains water should be avoided by the high temperature, otherwise due to the evaporation lose points, ranging from loss of transparency, the re-occurrence of burst. In addition, opal is not acid, so, Pei Daiou parked jewelry should avoid high temperatures and acidic substances. Collection of opal jewelry, should also be noted that the environment can not be too dry, otherwise will cause dehydration, cracks, or even rupture. To prevent dehydration, should be separated by a time in the dry season, opal jewelry on the water soaking once.
(5) amethyst jewelry. Amethyst color instability, when the temperature or after prolonged exposure will cause fading. Wearing or the collection process, should avoid high temperature or exposure.
(6), malachite and turquoise jewelry. These two gems of hardness than those of water, very easy to wear. Both chemically unstable, the case of acid corroded dissolved. The turquoise color, especially in the high temperature and even longer period of time of exposure and sweat soaked, but also make the turquoise color. These are all important to note that in the process of wear and collection.
(7) of pearl and coral jewelry. The low hardness of pearl and coral, vulnerable to friction leaving the surface lose their luster. The two ingredients are calcium carbonate, the case of acid will be subjected to corrosion dissolve. The summer is easy to sweat, sweat also make pearls, the surface of the coral damage and lose their luster. Powder in the cosmetics, perfume and hair gel, etc., but also the pearl will be gradually eclipsed. Therefore, in the summer it is best not to wear such jewelry. Perspiration tarnished, can be placed in the rinse water, and then a soft fabric gently wiped away. Pearl jewelry in the collection before, be sure to rinse after water storage place must also avoid cosmetics.
(8), lapis lazuli jewelry. Lapis lazuli jewelry tarnished, must not be soaked in water and flushing. Lapis lazuli is a variety of mineral composition of the granular aggregates, soaked in water and flush the gem surface dirt will penetrate to the internal, leading to the change of lapis lazuli original luster. Lapis lazuli jewelry tarnished with a damp cloth to gently wipe, wiped off the dirt.


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