نتایج جستجو برای: i100
تعداد نتایج: 69 فیلتر نتایج به سال:
اصلاح برنامه ریزی آبیاری و بهبود مدیریت سیستم های آبیاری، دو محوری است که در ارتقای کارآیی مصرف آب در کشاورزی تأثیر بسزایی دارد. این آزمایش به منظور بررسی تأثیر دو روش آبیاری قطره ای نواری (تیپ) و آبیاری شیاری تحت رژیم های مختلف آبیاری بر عملکرد و اجزای عملکرد سویا در سال زراعی (85-84) در ایستگاه تحقیقات کشاورزی گرگان اجرا شد. آزمایش به صورت کرت های خرد شده در قالب طرح بلوک های کامل تصادفی با س...
In addition to irrigation, other viticultural practices such as soil management can be applied improve grapevine (Vitis vinifera L.) quality responses and attenuate unfavourable environmental conditions. Cover crops in the interrow of irrigated vineyards change dynamics water extraction it is expected that patterns vines’ relations will modified, also changing their productive responses. This s...
Wild-type toluene 4-monooxygenase (T4MO) of Pseudomonas mendocina KR1 oxidizes toluene to p-cresol (96%) and oxidizes benzene sequentially to phenol, to catechol, and to 1,2,3-trihydroxybenzene. In this study T4MO was found to oxidize o-cresol to 3-methylcatechol (91%) and methylhydroquinone (9%), to oxidize m-cresol and p-cresol to 4-methylcatechol (100%), and to oxidize o-methoxyphenol to 4-m...
Due to the complexity of their structure, the theoretical study of interstellar clouds must be based on threedimensional models. It is already possible to estimate the distribution of equilibrium dust temperature in fairly large 3D models and, therefore, also to predict the resulting far-infrared and sub-mm emission. Transiently heated particles introduce, however, a significant complication an...
Toluene-o-xylene monooxygenase (ToMO) from Pseudomonas stutzeri OX1 was found to oxidize nitrobenzene (NB) to form m-nitrophenol (m-NP, 72%) and p-NP (28%) with an initial rate of 0.098 and 0.031 nmol/(min mg protein), respectively. It was also discovered that wild-type ToMO forms 4-nitrocatechol (4-NC) from m-NP and p-NP with an initial rate of 0.15 and 0.0082 nmol/(min mg protein), respective...
The development of a low temperature storage cabinet for the preservation of viruses and other infectious agents some years ago (Horsfall, 1940) led to the use of similar solid C02 cabinets in numerous laboratories. The original cabinet has been in continuous operation for more than 11 years, and others more or less like it have been operating for almost as long. Despite the generally satisfact...
A new europium-based complex, K[Eu(hfa)4] with hfa = hexafluoroacetylacetonate is synthesized and its structure confirmed via X-ray crystallography. The unravels an anionic octa-coordinate K[Eu(hfa)4], as opposed to the neutral hexacoordinate complex Eu(hfa)3 routinely/ubiquitously presumed be case in literature. displayed pH-dependent, “on–off” emission changes solution exhibited a pKa of 6.13...
for AICHE 2004 [15C12] Advances in Biocatalysis and Protein Engineering Tailoring Toluene para-Monooxygenase of Ralstonia pickettii PKO1 for Regiospecific Oxidation of Aromatics Using Active Site Engineering A. Fishman, Y. Tao, W. E. Bentley, and T. K. Wood University of Connecticut, Storrs, CT University of Maryland, College Park, MD Oxygenases are promising biocatalysts for performing selecti...
Toluene-o-xylene monooxygenase (ToMO) from Pseudomonas stutzeri OX1 oxidizes toluene to 3- and 4-methylcatechol and oxidizes benzene to form phenol; in this study ToMO was found to also form catechol and 1,2,3-trihydroxybenzene (1,2,3-THB) from phenol. To synthesize novel dihydroxy and trihydroxy derivatives of benzene and toluene, DNA shuffling of the alpha-hydroxylase fragment of ToMO (TouA) ...
Prior studies find that hospitals face upward-sloping RN labor supply, which is taken as evidence of monopsonistic power. But previous research finds little relationship across labor markets between RN wages (relative to alternative wages) and measures of market size or hospital density. This inconsistency might be resolved if “classic” monopsonistic power varies over time owing to demand-suppl...
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