10 km gap in the Earth
On the penultimate day of May this year, the National Petroleum corp Limited (中国石油天然气集团有限公司) began to implement a well with a depth of more than 10,000 metres. It will be the first drilling in China at specified depth. Drilling works are carried out as part of a investigation task carried out in the Gobi Desert (Taklamakan/塔克拉玛干) in the municipality of ShaYa (沙雅), the territory of AkSu (克苏), in the state of Xinjiang (新疆维吾尔自治区).
For the intent of the project, an drilling tower of more than 20 floors was constructed. For this purpose, drilling is made with drills with a weight of about 2000 tons, which will penetrate more than 10 layers of the earth's crust, including chalky rocks of 66 to 145 million years.
Scientists plan to usage the results of the investigation obtained through the well to find mineral resources, but besides to measure environmental threats specified as earthquakes or volcanic eruptions.
Drilling specified a deep gap is an highly hard task from a technological perspective. It involves the complexity of geological conditions that prevail deep below the surface of force and temperature. According to the technological team, the work will last 457 days.
It'll be the second deep gap on Earth. The first place in this category is simply a well constructed in Russia on the Kolsko Peninsula. Depth 12262 meters, implementation time 1969 – 1989, or 20 years.
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HuaWei fights to the end
HuaWei (华为) presented a fresh smartphone model in late May: HuaWei Enjoy 60X (华为畅享60系列).
It's a device with different specifications. The model is simply a kind of hybrid of elements from a higher and lower shelf, equipped with a large battery of 7,000 mAh, characterized by advanced sound quality, large screen, and increasingly popular with users operating strategy HongMeng 3.0 (chin. 鸿蒙3.0系统).
Buyers have options with memory from 128 to 512 GB. A 6.95 inch TFT screen with Full HD+ resolution and 90 Hz image refresh rate.
On the front of the 8-megapixel selfie camera, on the back of the housing 2 cameras (50 and 2 Mpx), integrated into a large, circular "island".
The heart of the device is the Snapdragon 680 processor.
HuaWei Enjoy 60x is not adapted for 5G network operation. But this is the cheapest cell telephone in HuaWei past with quite a few memory.
Price:
- with a memory of 128 GB costs approx. PLN 875,
- with a memory of 512 GB was valued at approx. PLN 1171.
In China...
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Flexible silicon photovoltaic cells
Photovoltaic cells have a wide scope of applications not only in the energy sector, but besides in telecommunications, smartphones, electrical cars, aviation and another fields.
A investigation squad from the Shanghai Institute of Microsystems of the Chinese Academy of Sciences (中科院上海微系统所) developed flexible monocrystalline silicon solar cells, which can be bent like a sheet of paper, at all angle without being broken. The technology description was published on 24 May in the technological diary Nature. (https://www.nature.com/articles/s41586-023-05921-z)
As the article says, scientists from Shanghai Institute:
‘Silicon is the most abundant semiconductor component in the earth’s crust; it is produced in the form of wafers to produce about 95% of solar cells in the current PV market. However, these cells are fragile and break under bending stress, which limits their usage on a large scale in flexible applications. presently thin-layer solar cells made of amorphous silicon, Cu(In,Ga)Se2, CdTe, organic materials and perovskites show flexibility, but their usage is limited due to the low efficiency of energy conversion (PCE), the release of toxic materials to the environment, worse performance in large areas and unstable working conditions. Therefore, many available flexible solar cells did not attract customers, and most of the companies that produced them ended their business. In this survey we propose a method of morphological engineering for the production of folded crystalline silicon wafers (c-Si) for commercial large-scale production of large-scale solar cells with remarkable performance.“
So it seems that the impossible has become possible.
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Author: 梁安基 Andrzej Z. Liang, 上海 Shanghai, 中国 China
Email: [email protected]
Editorial: Leszek B.
Email: [email protected]
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