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7篇 您的检索式:作者名="Alexandra Chang"
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1The strigolactone receptor D14 targets SMAX1 for degradation in response to GR24 treatment and osmotic stress显示文摘The effects of the phytohormone strigolactone(SL)and smoke-derived karrikins(KARs)on plants are generally distinct,despite the fact that they are perceived through very similar mechanisms.The homologous receptors DWARF14(D14)and KARRIKIN-INSENSITIVE2(KAI2),together with the F-box protein MORE AXILLARY GROWTH2(MAX2),mediate SL and KAR responses,respectively,by targeting different SMAX1-LIKE(SMXL)family proteins for degradation.These mechanisms are putatively well-insulated,with D14-MAX2 targeting SMXL6,SMXL7,and SMXL8 and KAI2-MAX2 targeting SMAX1 and SMXL2 in Arabidopsis thaliana.Recent evidence challenges this model.We investigated whether D14 can target SMAX1 and whether this occurs naturally.Genetic analysis indicates that the SL analog GR24 promotes D14-SMAX1 crosstalk.Although D14 shows weaker interactions with SMAX1 than with SMXL2 or SMXL7,D14 mediates GR24-induced degradation of SMAX1 in plants.Osmotic stress triggers SMAX1 degradation,which is protective,through SL biosynthesis and signaling genes.Thus,D14-SMAX1 crosstalk may be beneficial and not simply a vestige of the evolution of the SL pathway.Qingtian Li Elena Sánchez Martín-Fontecha Aashima Khosla Alexandra R.F.White Sunhyun Chang Pilar Cubas David C.Nelson 2022Plant Communications2022,3,2:5
2Adjunctive acupuncture for pain and symptom management in the inpatient setting: protocol for a pilot hybrid effectiveness-implementation study显示文摘BACKGROUND: Effective pain management among hospitalized patients is an important aspect of providing quality care and achieving optimal clinical outcomes and patient satisfaction. Common pharmacologic approaches for pain, though effective, have serious side effects and are not appropriate for all inpatients. Findings from randomized controlled trials(RCTs) support the efficacy of acupuncture for many symptoms relevant to inpatients including postoperative pain, cancer-related pain, nausea and vomiting, and withdrawal from narcotic use. However, the extent to which findings from RCTs translate to real-world implementation of acupuncture in typical hospital settings is unknown. METHODS/DESIGN: In partnership with the launch of a clinical program offering acupuncture services to inpatients at the University of California San Francisco's Mount Zion Hospital, we are conducting a pilot study using a hybrid effectiveness-implementation design to:(1) assess the effectiveness of acupuncture to manage pain and other symptoms and improve patient satisfaction; and(2) evaluate the barriers and facilitators to implementing an on-going acupuncture service for inpatients. During a twomonth pre-randomization phase, we evaluated and adapted clinical scheduling and treatment protocols with acupuncturists and hospital providers and pretested study procedures including enrollment, consent, and data collection. During a six-month randomization phase, we used a two-tiered consent process in which inpatients were first consented into a study of symptom management, randomized to be offered acupuncture, and consented for acupuncture if they accepted. We are also conducting in-depth interviews and focus groups to assess evidence, context, and facilitators of key provider and hospital administration stakeholders.DISCUSSION: Effectiveness research in 'real-world' practice settings is needed to inform clinical decision-making and guide implementation of evidence-based acupuncture practices. To successfully provide clinical acupuncture services and maintain a rigorous research design, practice-based trials of acupuncture require careful planning and attention to setting-specific, contextual factors.TRIAL REGISTRATION: This trial has been registered in Clinical Trials.gov. The identifier is NCT01988194, registered on November 5, 2013.Maria T.Chao Alexandra Chang Sanjay Reddy James D.Harrison Joseph Acquah Miria Toveg Trilce Santana Frederick M.Hecht 2016Journal of Integrative Medicine2016,14,3:5
3Empirical estimates of regional carbon budgets imply reduced global soil heterotrophic respiration显示文摘Resolving regional carbon budgets is critical for informing land-based mitigation policy.For nine regions covering nearly the whole globe,we collected inventory estimates of carbon-stock changes complemented by satellite estimates of biomass changes where inventory data are missing.The net land–atmospheric carbon exchange(NEE)was calculated by taking the sum of the carbon-stock change and lateral carbon fluxes from crop and wood trade,and riverine-carbon export to the ocean.Summing up NEE from all regions,we obtained a global‘bottom-up'NEE for net land anthropogenic CO_(2)uptake of–2.2±0.6 Pg C yr^(-1)consistent with the independent top-down NEE from the global atmospheric carbon budget during 2000–2009.This estimate is so far the most comprehensive global bottom-up carbon budget accounting,which set up an important milestone for global carbon-cycle studies.By decomposing NEE into component fluxes,we found that global soil heterotrophic respiration amounts to a source of CO_(2)of 39 Pg C yr^(-1)with an interquartile of 33–46 Pg C yr^(-1)—a much smaller portion of net primary productivity than previously reported.Philippe Ciais Yitong Yao Thomas Gasser Alessandro Baccini Yilong Wang Ronny Lauerwald Shushi Peng Ana Bastos Wei Li Peter A.Raymond Josep G.Canadell Glen P.Peters Rob J.Andres Jinfeng Chang Chao Yue A.Johannes Dolman Vanessa Haverd Jens Hartmann Goulven Laruelle Alexandra G.Konings Anthony W.King Yi Liu Sebastiaan Luyssaert Fabienne Maignan Prabir K.Patra Anna Peregon Pierre Regnier Julia Pongratz Benjamin Poulter Anatoly Shvidenko Riccardo Valentini Rong Wang Grégoire Broquet Yi Yin Jakob Zscheischler Bertrand Guenet Daniel SGoll Ashley-P.Ballantyne Hui Yang Chunjing Qiu Dan Zhu 2021National Science Review2021,8,2:3
4Peanut and peanut products: A food safety perspec- tive 显示文摘Alexandra S Chang Aswathy Sreedharan Keith R Schnei- der 2013Food Control2013,32,1:1
5Embryonic stem cell-derived neurogenesis显示文摘Kaomei Guan Hong Chang Alexandra Rolletschek Anna M. Wobus 2001Cell and Tissue Research2001,,2:1
6监管不会扼杀分享经济,我们需要的只不过是新的规则显示文摘今年4月,旧金山市的律师Daniel Herrera对一些房东提起了诉讼.因为他们非法驱逐了原先的房屋租客。这些房东援引了埃利斯法案为自己辩护,该法案允许房东在将房产撤出租赁市场的前提下与租客解约。但是他们的房子事实上仍在对外出租,这些房源只不过是被放到了诸如Airbnb等针对短租的P2P租房网站上,以获得更高的房租收入。Alexandra Chang 2014科技新时代2014,,8:0
7你不可不知的iPhone 5显示文摘苹果的传奇创始人、前CEO乔布斯离世已有一年多的时间了。随着iPhone5的发布,评论界对于苹果公司未来发展的前景众说纷纭:一个失去了乔布斯、并被外界传言“正在失去创新力”的苹果能否重新找回昔日的光辉?如果想证明没有乔布斯的苹果依旧可以做得很好。现任CEO蒂姆·库克还任重道远。Alexandra Chang 2012英语沙龙(高中)2012,,12:0
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