|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Shock fragmentation model for gravitational collapse显示文摘A cloud of gas collapsing under gravity will fragment.We present a new theory for this process,in which layers of shocked gas fragment due to their gravitational instability.Our model explains why angular momentum does not inhibit the collapse process.The theory predicts that the fragmentation process produces objects which are significantly smaller than most stars,implying that accretion onto the fragments plays an essential role in determining the initial masses of stars.This prediction is also consistent with the hypothesis that planets can be produced by gravitational collapse. | Michael Wilkinson Bernhard Mehlig Michael A.Morgan | 2011 | Research in Astronomy and Astrophysics2011,11,5: | 2 |
| 2 | Achieving reliable seismic performance enhancement using multi‐stage friction pendulum isolators显示文摘 | Troy A.Morgan Stephen A.Mahin | 2010 | Earthquake Engng Struct Dyn2010,,13: | 1 |
| 3 | Revision of anastomotic stenosis after pancreatic head resection for chronic pancreatitis: is it futile?显示文摘 | Katherine A.Morgan Bennett B.Fontenot Norman R.Harvey David B.Adams | 2010 | HPB2010,,3: | 1 |
| 4 | Experiential and Informational Knowledge, Architectural Marketing Capabilities, and the Adaptive Performance of Export Ventures: A Cross‐National Study显示文摘 | Neil A.Morgan ShaomingZou Douglas W.Vorhies Constantine S.Katsikeas | 2003 | Decision Sciences2003,,: | 1 |
| 5 | Achieving reliable seismic performance enhancement using multi‐stage friction pendulum isolators显示文摘 | Troy A.Morgan Stephen A.Mahin | 2010 | Earthquake Engng Struct Dyn2010,,13: | 1 |
| 6 | Prime time for base editing in the mitochondria显示文摘A recent study published in Cell by the Kim lab represents a great advance towards expanding DNA editing possibilities to mitochondrial DNA(mtDNA)as they show reasonable targeted A-to-G conversions in human mtDNA using base editors to broaden the arsenal of available tools.1 Mutations in mitochondrial DNA(mtDNA)are linked to several diseases(Fig.1),thus,development of gene therapy and editing approaches could lead to curative options for patients suffering from these illnesses.In this direction,gene editing tools such as zinc-finger nucleases(mitoZFN),transcription activator-like effector nucleases(mitoTALENs)and meganucleases(mitoARCUS)were shown to eliminate mutant mtDNA and shift heteroplasmy. | Michael A.Morgan Lucas Lange Axel Schambach | 2022 | Signal Transduction and Targeted Therapy2022,7,8: | 0 |
| 7 | Targeted cytokine delivery:cell therapy to remodel the pre-metastatic niche显示文摘Tumor metastases present an often difficult to treat therapeutic challenge for cancer patients and their caregivers.The recent paper by the Kaplan group(Kaczanowska et al.)exploited the natural capacity of monocytes or a subset of monocytes to migrate to tumor sites and pre-metastatic niches to deliver IL-12 in a novel anticancer approach designed to stimulate local immune responses.1 This raises the possibility to simultaneously fight cancer on at least two critical fronts,(1)elimination of the primary tumor and(2)inhibition of newly developing pre-metastatic lesions. | Michael A.Morgan Lucas Lange Axel Schambach | 2021 | Signal Transduction and Targeted Therapy2021,6,8: | 0 |
| 8 | Climate change effects on rangelands and rangeland management:affirming the need for monitoring显示文摘Uncertainty as to the extent and magnitude of changes in conditions that might occur due to climate change poses a problem for land and resource managers as they seek to adapt to changes and mitigate effects of climate variability.We illustrate using scenarios of projected future conditions on rangelands in the Northern Great Plains and Desert Southwest of the United States.These two regions are different in the ways climate change is projected to affect the regions.Projection of a longer and warmer growing season in the Northern Great Plains could lead to increased forage production and land productivity.Highly uncertain effects on summer monsoons that primarily control rangeland productivity in the Desert Southwest,combined with the possibility of more intense and/or frequent drought events,could present land managers with challenges stemming from decreased forage production and land productivity.Climate projections,though uncertain,provide land managers with basic insight into future conditions they might encounter.They need more.A focus on vulnerability and resilience,with explicit recognition of interactions between ecological and socio-economic factors,coupled with systematic monitoring and assessment of observable conditions on the land to supplement information based on climate projections,will more effectively provide critical and specific information managers need to adaptively manage rangelands under uncertain climate futures. | Daniel W.McCollum John A.Tanaka Jack A.Morgan John E.Mitchell William E.Fox Kristie A.Maczko Lori Hidinger Clifford S.Duke Urs P.Kreuter | 2017 | Ecosystem Health and Sustainability2017,3,3: | 0 |
| 9 | Two-way communication: Volatile emission and uptake occur through the same barriers显示文摘Volatile organic compounds(VOCs)are released from aboveground organs into the atmosphere and/or from roots into the soil,allowing plants to communicate and interact with their environment,including with each other.Plant-plant communication via VOCs includes intra-and inter-species signaling as well as within-plant self-signaling.In some recipient tissues,for example,VOC perception encompasses storing the modified VOC for direct defense against herbivores(Sugimoto et al.,2014)or increasing tolerance to abiotic stresses(Zhao et al.,2020).In addition,or alternatively,perceived VOCs may initiate signaling cascades that prime plant defenses(Brosset and Blande,2022).In all cases,plant VOCs are first released into the environment before being taken up and perceived by the same or neighboring plants.While significant progress has been made over the last several years to elucidate how VOCs are released from plant cells,these studies have also revealed new questions about how communicated VOCs are imported across cellular barriers.Recent reviews(Loreto and D’Auria,2022;Wang and Erb,2022)and a special issue(Vlot and Rosenkranz,2022)have proposed mechanisms for VOC perception and signaling.In this Opinion piece,we shed light on the gaps in knowledge about VOC import and offer perspectives for future research aiming at understanding the molecular mechanisms underlying VOC-mediated communication in plants. | Joshua R.Widhalm Meng-Ling Shih John A.Morgan Natalia Dudareva | 2023 | Molecular Plant2023,16,1: | 0 |
| 10 | 氟塑料添加剂的补强作用显示文摘1、前言用高分子量聚四氟乙烯(PTFE)作橡胶补强添加剂以提高撕裂强度,这在硅橡胶中于50年代中期,在氟橡胶中于60年代末期就研究过了。虽然PTFE是以粉末形式加入橡胶中,但混炼时剪切力使PTFE粉变成了网络状。该网状结构有效地增强了橡胶,但也导致了成品畸变,使硫化胶的硬度和定伸强度过高。这些问题限制了高分子量PTFE粉的实际用量,因此,它们的实际应用局限于那些弹性和表面平滑性不太重要的场合,如推进剂。 | Richard A.Morgan 雷育民 | 1991 | 橡胶参考资料1991,0,7: | 0 |
| 11 | 春小麦释放氨的特征显示文摘在农业生产体系中,作物与大气间的氨气交换对于估算氮素需求具有重要意义。然而,作物氨气动态的生理基础仍不清楚。本研究旨在描述生长箱内,良好供肥的小麦植株从早期营养生长到成熟的氨气流动过程;在静态全株气体交换袋内调查了生育期及光呼吸对植株NH_3及CO_2交换的影响,并确定了籽粒灌浆期的NH_3补偿点。试验自始至终观察了在周围充满NH_3气体条件下,小麦植株的NH_3释放(损失)状况。尽管以叶面积为基础来表述,NH_3与CO_2两种气体的变化趋势有别,但是叶面积对这两种气体交换速率影响很大。光呼吸只与NH_3释放的水平有适度关系。NH_3释放最高速率出现在籽粒灌浆期,在开花后和成熟前分别表现出两次爆发性的高度活动。随着植株成熟,NH_3补偿点升高。生育晚期NH_3释放的潜势增强与个体发育的氮代谢变化有关,后期氮代谢使植株组织中的(NH_4^+]浓度比幼龄营养组织中的要有所升高。 | Jack A.Morgan 杜志荣 | 1990 | 国外农学(麦类作物)1990,,2: | 0 |