Results 31 to 40 of about 1,026,443 (246)

微藻油脂合成的转录调控研究进展Advances in transcriptional regulation of lipid synthesis in microalgae

Zhongguo youzhi
生物燃料是传统化石燃料的理想替代品，微藻是生产生物燃料的优良原料,通过对微藻油脂合成和调控的了解，能够有效提高微藻生产生物柴油的效率。转录因子是一种具有特殊功能结构、行使调控基因表达功能的蛋白质分子，在复杂的油脂合成代谢过程中，转录因子能对代谢过程中多个酶系进行集体调控，从而促进藻细胞中油脂积累。从微藻油脂的合成途径出发，简要介绍了合成途径中的关键酶，重点综述了bZIP、MYB、Dof、bHLH转录因子对于微藻油脂合成的调控影响。微藻油脂合成涉及多个亚细胞单位的多条途径，是一个十分复杂的代谢网络过程 ...
张艺博1，薛永常1，刘长斌1，2ZHANG Yibo1, XUE Yongchang1, LIU Changbin1，2
doaj   +1 more source

Using Harvest Data to Assess Factors Influencing Regional Population Declines of Muskrats (Ondatra zibethicus) 利用捕获数据评估影响麝鼠 (Ondatra zibethicus) 区域种群数量下降的相关因素

Wildlife Letters, EarlyView.
Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller, Andrea Sylvia, Jesse T. Boulerice, Adam A. Ahlers, Dwayne R. Etter, Eric M. Dunton   +5 more
wiley   +1 more source

Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou, Pin Li, Yuqian Sun, Chenhan Ma, Yushu Tian, Qiannan Lin, Yun Li, Lijuan Yin, Dongmei Zhang   +8 more
wiley   +1 more source

毛细管色谱切割－反吹法归一化分析汽油中芳烃

, 2002
发展了一种毛细管色谱切割-反吹方法分析汽油中的芳烃。利用OV-2330强极性毛细管预柱将芳烃保留至n-C10之后，并反吹到非极性毛细管柱中按沸点详细分离分析。从预柱先流出的组伊从分析柱流出的组分都先后进入同一检测器中，因此可用响应因子校正的归一化方法定量分析汽油中的芳烃。该方法在15min内完成汽油中苯至C10芳烃的分析，结果的重复精度误差≤3%（RSD），切割误差±5s时对分析结果的影响≤4%（RSD ...
王涵文, 苗虹, 庄志洪, 关亚风
core   +1 more source

Main Detection Methods of Active Ingredients in Health Food(保健食品活性成分的主要检测方法) [PDF]

Shipin kexue jishu xuebao, 2013
The mount of active ingredients is the key to effectiveness of health food. And the accurate detection methods are the important for the health food quality. The detection methods for active ingredients in health food can be divided into optical analysis
YANG Xiu-fang(杨秀芳), MA Yang-min(马养民), ZHANG Ying-zhen(张影珍)   +2 more
doaj   +1 more source

Alleviation of phosphorus rather than nitrogen limitation driven by permafrost and landscape effects on Dahurian larch forests

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu, Liang Shi, Zhaopeng Song, Boyi Liang, Honglin He, Kun Yang, Weihua Zhang, Lisha Lyu, Anatoly S. Prokushkin, Hongyan Liu   +9 more
wiley   +1 more source

Reconstructing Old Chinese *‐ts Using Han‐Time Material

Transactions of the Philological Society, EarlyView.
Abstract Baxter & Sagart (2014b) reconstruct *‐Vt‐s on the basis of Middle Chinese reflexes in ‐jH (from some OC *‐s) coupled with either etymological or graphic connections to words in Middle Chinese ‐t. This approach, while perfectly sound, can suffer from lack of etymological or graphic data, leading to missed reconstructions. Since Old Chinese *‐ts
Julien Baley
wiley   +1 more source

Looking at Us Through Their Eyes. The Analytical Process from Ethnographic Perspectives1

Journal of Analytical Psychology, EarlyView.
Abstract This article looks at the analytical situation through the Others’ eyes—through examples from contemporary ethnographies of foreign cultures. It discusses the following issues: a) The analogy between the ontological worlds of the dead, ghosts, animals and dreams in “primitive populations” and the analytical psychological descriptions of the ...
Stefano Carta
wiley   +1 more source

Auto-focus technology and its application based on image processing

, 2009
Auto-focusing technique is an important method to improve the precision,intelligentization,automatization for the indentation diameter measurement.The paper introduces an auto-focus method of indentation diameter measurement based on image processing ...
Chen, Xiaomei, Yang, Tao, Zuo, Yong
core  

The collective application of shorebird tracking data to conservation

Conservation Biology, EarlyView.
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison, Candace Stenzel, Alexandra Anderson, Jessica Howell, Richard B. Lanctot, Marley Aikens, Joaquín Aldabe, Liam A. Berigan, Joël Bêty, Erik Blomberg, Juliana Bosi de Almeida, Andy J. Boyce, David W. Bradley, Stephen Brown, Jay Carlisle, Edward Cheskey, Katherine Christie, Sylvain Christin, Rob Clay, Ashley Dayer, Jill L. Deppe, Willow English, Scott A. Flemming, Olivier Gilg, Christine Gilroy, Susan Heath, Jason M. Hill, J. Mark Hipfner, James A. Johnson, Luanne Johnson, Bart Kempenaers, Paul Knaga, Eunbi Kwon, Benjamin J. Lagassé, Jean‐François Lamarre, Christopher Latty, Don‐Jean Léandri‐Breton, Nicolas Lecomte, Pam Loring, Laura A. McDuffie, Rebecca McGuire, Scott Moorhead, Juan G. Navedo, David Newstead, Erica Nol, Alina Olalla‐Kerstupp, Bridget Olson, Elizabeth Olson, Julie Paquet, Allison K. Pierce, Jennie Rausch, Kevin Regan, Matthew E. Reiter, Amber M. Roth, Mike Russell, Daniel Ruthrauff, Sarah T. Saalfeld, Amy L. Scarpignato, Shiloh Schulte, Nathan R. Senner, Joseph A. M. Smith, Paul A. Smith, Zach Spector, Kelly Srigley Werner, Michelle L. Stantial, Audrey R. Taylor, T. Lee Tibbitts, Mihai Valcu, Nils Warnock, Walter Wehtje, Brad Winn, Michael B. Wunder   +71 more
wiley   +1 more source