搜索结果: 1-15 共查到“理学 Boron”相关记录40条 . 查询时间(0.062 秒)
Teaching Life a New Trick:Bacteria Make Boron-Carbon Bonds（图）
Teaching Life a New Trick Bacteria Boron-Carbon Bonds
2017/12/18
In another feat of bioengineering, Caltech's Frances Arnold, the Linus Pauling Professor of Chemical Engineering, Bioengineering and Biochemistry, and her team have created bacteria that can, for the ...
Atomistic Calculations Predict That Boron Incorporation Increases The Efficiency Of Leds（图）
Atomistic Calculations Predict Boron Incorporation Increases Leds
2017/12/18
High-power white LEDs face the same problem that Michigan Stadium faces on game day — too many people in too small of a space. Of course, there are no people inside of an LED. But there are many elect...
Boron toxicity is alleviated by hydrogen sulWde in cucumber (Cucumis sativus L.) seedlings
Boron toxicity Cucumber (Cucumis sativus L.) Expansin Hydrogen sulWde (H2S) Pectin methylesterase Root elongation
2015/2/5
Boron (B) is an essential micronutrient for plants, which when occurs in excess in the growth medium, becomes toxic to plants. Rapid inhibition of root elongation is one of the most distinct symptoms ...
Critical transport: Bond LSC team finds boron vital for plant stem cells, corn reproduction（图）
transport Plant stem cells corn reproduction
2014/9/1
Carbon’s next-door neighbor on the periodic table typically receives little attention, but when it comes to corn reproduction boron fills an important role.
Researchers discover boron “buckyball” （图）
Buckyballs Molecular carbon Nanometer era Bucky balls Canopy structure
2014/7/18
The discovery of buckyballs — soccer-ball-shaped molecules of carbon — helped usher in the nanotechnology era. Now, Lai-Sheng Wang’s research group and colleagues from China have shown that boron, car...
Origin of boron in the Damxung Co Salt Lake (central Tibet): Evidence from boron geochemistry and isotopes
boron geochemistry origin quaternary deposits Damxung Co Salt Lake Tibet
2017/4/11
The origin of boron in boron-rich salt lakes in the Tibetan Plateau has long been the subject of debate. The Damzung
Co Salt Lake in central Tibet has high boron concentrations (B = 276–313 mg/L) and...
Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water
boron fluoride carbonate rock water-rock interaction batch dissolution
2017/4/11
High natural fluoride (up to 6.1 mg/l) and boron (up to 2.1 mg/l) concentrations in groundwater are recorded in western
Estonia, where a carbonaceous Silurian–Ordovician aquifer system is the main so...
Boron and other trace element constraints on the slab-derived component in Quaternary volcanic rocks from the Southern Volcanic Zone of the Andes
Andean Arc arc lava boron prompt γ-ray analysis mantle source
2017/4/11
We present a dataset for boron and other trace element contents obtained from samples from 13 volcanoes distributed
along the Quaternary volcanic front of the Southern Volcanic Zone (SVZ) of the Chil...
Boron Release from Weathering of Illites, Serpentine, Shales,and Illitic/Palygorskitic Soils
Illitic/Palygorskitic Soils Boron Release
2011/11/11
Boron Release from Weathering of Illites, Serpentine, Shales,and Illitic/Palygorskitic Soils.
Experimental study and critical review of structural, thermodynamic and mechanical properties of superhard refractory boron suboxide, B6O
superhard materials boron suboxide thermodynamics crystal structure mechanical properties
2011/8/18
Abstract: In the present paper we performed the analysis of available data on structural, thermodynamic and mechanical properties of B6O. Although the compound is known for half a century and has been...
First Principles Calculation of Field Emission from Carbon Nanotubes With Nitrogen and Boron Doping
First Principles Calculation Field Emission Carbon Nanotubes Nitrogen Boron Doping
2010/11/24
We investigate the eld emission properties of nitrogenated and boronated carbon nanotubes using time-dependent density functional theory, were the wave function propagation is performed using the Cra...
Isotopic evidence of boron in precipitation originating from coal burning in Asian continent
boron isotopes coal burning trace elements Asian continent long-range transport
2017/8/9
The boron concentration and isotopic composition (δ11B) of precipitation collected from December 2002 to March 2006 at three sites on the Japan Sea coast were measured. Those sites have been considera...
Surface-Enhanced Raman Scattering of 4-Aminothiophenol Adsorbed on Silver Nanosheets Deposited onto Cubic Boron Nitride Films
Surface-Enhanced Raman Scattering 4-Aminothiophenol Adsorbed Silver Nanosheets Deposited
2010/9/17
A simple method was found for the fabrication of silver nanosheets (AgNS) by the catalysis of gold nanoparticles (AuNP) on an amine-terminated cubic boron nitride (cBN) surface deposited on a Si(001) ...
Determination of Total Fluoride in Boron-containing Solutions
Fluoride Boron-containing Solutions
2010/9/20
We describe a pretreatment method before determining the total fluoride in solutions containing tetrafluoroborate ion (BF4−) with ion-selective electrodes (ISEs). BF4− was quantitatively ...
Boron can be found in high concentrations in the groundwater of the island of Cyprus, especially in the central part of the island. Boron in high concentrations is of major concern due to its toxicity...