Abstract:
An improved medium for selectively culturing and detecting B. anthracis is provided. The medium comprises at least one polymyxin antibiotic, typically colistin, in combination with at least one dihydrofolate reductase inhibitor, typically trimethoprim, to provide the selectivity necessary to differentially culture B. anthracis from complex environmental samples. Methods for making the improved medium, as well as methods for utilizing the improved medium to selectively culture B. anthracis are also provided.
Abstract:
Production of ethanol using a strain of xylose-utilizing Z ymomonas with a genetic modification of the glucose-fructose oxidoreductase gene was found to be improved due to greatly reduced production of xylitol, a detrimental by-product of xylose metabolism synthesized during fermentation.
Abstract:
Two genes from non-conventional yeast encode arabinose transporters. These arabinose transporters are capable of transporting arabinose across the cell membrane. These genes may be expressed heterologously in a host that is not otherwise capable of taking up significant amounts of arabinose from the environment of use. Methods are disclosed to use such genetically engineered hosts to ferment pentose such as arabinose, to produce ethanol.
Abstract:
The invention provides CBD ZnS/Zn(O,OH)S and spray deposited ZnS/Zn(O,OH)S buffer layers prepared from a solution of zinc salt, thiourea and ammonium hydroxide dissolved in a non-aqueous/aqueous solvent mixture or in 100% non-aqueous solvent. Non-aqueous solvents useful in the invention include methanol, isopropanol and triethyl-amine. One-step deposition procedures are described for CIS, CIGS and other solar cell devices.
Abstract:
A method of using sequential chemostat culture vessels to provide continuous H 2 production, in which photosynthestic O 2 evolution and H 2 photoproduction are separated physically into two separate bioreactors, comprising: a) growing a microorganism culture able to continuously generate H 2 by photosynthetically producing cells at about the early-to-late log state in a first photobioreactor operating as a sulfur chemostat under aerobic and/or conditions; b) continuously feeding cells from the first photobioreactor to a second photobioreactor operating under anaerobic conditions and sulfur deprivation conditions resulting from constant uptake of sulfate in the first bioreactor and a low rate of culture flow between the first and second bioreactors, for induction of hydrogenase and H 2 photoproduction to allow for continuous cultivation of the microorganism's cells in the first photobioreactor and constant H 2 production in the second photobioreactor; and c) H 2 gas from the second photobioreactor.
Abstract translation:使用顺序恒化器培养容器提供连续的H 2生成的方法,其中光合作用O 2进化和H 2 S 2进化, 其包括:a)在大约从早期到晚期的对数状态下,通过光合合产生细胞,在第一个时间生长能够连续产生H 2 O的微生物培养物,所述第一个生物反应器在第一个 在需氧和/或条件下作为硫化物恒化器运行的光生物反应器; b)将细胞从第一光生物反应器连续进料到第二光生物反应器,所述第二光生物反应器在厌氧条件和第一生物反应器中的硫酸盐的不断吸收和第一和第二生物反应器之间的低速培养物流动导致的脱硫条件下运行,用于诱导氢化酶和 H 2光生产以允许在第一光生物反应器中连续培养微生物细胞,并在第二光生物反应器中产生恒定的H 2: 和c)来自第二光生物反应器的H 2气体。 p>
Abstract:
Disclosed are compounds of Formula (I) wherein X, Y, R 1 -R 7 , T 1 , T 2 , Z, and p are as described herein; a pharmaceutical composition comprising a compound of Formula (I) and a carrier; a method of inhibiting growth of a cell, which method comprises administering in an amount effective to inhibit growth a compound of Formula (I); a method of treating cancer in a mammal, which method comprises administering in an amount effective to treat cancer a compound of Formula (I); a method of treating a viral, parasitic, or bacterial infection of a cell, which method comprises administering in an amount effective to treat a viral, parasitic, or bacterial infection a compound of Formula (I); and a method of preparing a compound of Formula (I) as described herein.
Abstract:
A system for laser cutting or monitoring a thin film deposition process includes a reflectometer with a substantially spherical chamber (1204) with multiple radiation sources or a single annular radiation source that illuminate a workpiece, such as a silicon wafer (1218). The illuminated workpiece reflects radiation to a collector (1234) to determine the thickness of the workpiece. The rate of speed of the laser cutting apparatus is controlled based upon this measurement.
Abstract:
The present invention provides a biological particle analogue, or biological analogue, that simulates a chosen biological organism or compound. The biological analogue includes a first portion that is not, in and of itself, recognized by the biological detection system, and a second portion, which provides the properties necessary for recognition by the detection system, carried by the first portion. The biological analogue is constructed in such a way as to include some important characteristics of the chosen biological organism or compound, while excluding other undesirable characteristics of the chosen biological organism or compound. The present invention is useful in testing a variety of biological detection systems.
Abstract:
System and method of modeling optical systems (339). Experimental data representative of exisitng systems may be used for ray-tracing exisitng optical system. Generalized models may be developed to model multiple stages having multiple elements in an optical system. Graphical user interfaces enable generalized model parameter entry, model execution (420), model editing, and graphical output (400) of ray-tracing results.
Abstract:
In situ fluorescence method to monitor state of sulfur-deprived algal culture's ability to produce H 2 under sulfur depletion, comprising: a) providing sulfur-deprived algal culture; b) illuminating culture; c) measuring onset of H 2 percentage in produced gas phase at multiple times to ascertain point immediately after anerobiosis to obtain H 2 data as function of time; and d) determining any abrupt change in three in situ fluorescence parameters; i) increase in F t (steady-state level of chlorophyll fluorescence in light adapted cells); ii) decrease in F m' (maximal saturating light induced fluorescence level in light adapted cells); and iii) decrease in Δ F/F m ' = (F m '-F t )/F m ' (calculated photochemical activity of photosystem II (PSII) signaling full reduction of plastoquinone pool between PSII and PSI, which indicates start of anaerobic conditions that induces synthesis of hydrogenase enzyme for subsequent H 2 production that signal oxidation of plastoquinone pool asmain factor to regulate H 2 under sulfur depletion.