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| 1 | Gorenstein dimensions of unbounded complexes and change of base (with an appendix by Driss Bennis)显示文摘For a commutative ring R and a faithfully flat R-algebra S we prove,under mild extra assumptions,that an R-module M is Gorenstein flat if and only if the left S-module S?_R M is Gorenstein flat,and that an R-module N is Gorenstein injective if and only if it is cotorsion and the left S-module Hom R(S,N)is Gorenstein injective.We apply these results to the study of Gorenstein homological dimensions of unbounded complexes.In particular,we prove two theorems on stability of these dimensions under faithfully flat (co-)base change. | CHRISTENSEN Lars Winthe KOKSAL Fatih LIANG Li | 2017 | Science China Mathematics2017，60，3： | 5 |
| 2 | Tyrosine metabolic enzymes from insects and mammals:A comparative perspective显示文摘在在昆虫和哺乳动物之间的酷氨酸的新陈代谢的差别举分子的进化的一个有趣的例子。昆虫和哺乳动物拥有酶的调整系统为酷氨酸代谢物遇见他们的特定的要求;然而,涉及酷氨酸新陈代谢的更相应的酶出现在许多昆虫种类。没有现代 genomics 的知识,一个人可能假定哺乳动物,通常比昆虫更复杂并且为重要 catecholamine neurotransmitters 并且为黑素作为一位先锋要求酷氨酸,应该拥有更多的酶控制酷氨酸新陈代谢。因此,昆虫为什么实际上拥有更多的酷氨酸的问题新陈代谢的酶相当有趣。昆虫为表皮变硬并且为天生的有免疫力的回答重重地依靠酷氨酸新陈代谢,这长被知道了,并且这些进化限制是可能的这个问题的关键答案。以 melanogenesis,哺乳动物也拥有规定的高水平;而昆虫加速象 melanogenesis 一样的小径必须因此忍受增加的氧化压力,然而哺乳动物的系统为 detoxification 拥有更多的机制。我们的研究组有机会描绘从昆虫和哺乳动物涉及酷氨酸新陈代谢的许多关键蛋白质的结构和功能。在这微型评论,我们将与昆虫相比在哺乳动物的一个进化观点的范围给我们关于酷氨酸的研究的简短概述新陈代谢的酶。 | Christopher John Vavricka Qian Han Prajwalini Mehere Haizhen Ding Bruce M. Christensen and Jianyong Li | 2014 | Insect Science2014，21，1： | 4 |
| 3 | miR-211 regulates the antioxidant function of lens epithelial cells affected by age-related cataracts显示文摘AIM: To investigate the effects and mechanism of miR-211 in mediating the antioxidant function of lens epithelial cells affected by age-related cataracts.METHODS: Real-time quantitative polymerase chain reaction(RT-q PCR) was used to detect miR-211 expression in the anterior lens capsules of healthy people, the anterior lens capsules of patients with age-related cataracts, and human epithelial cell line(SRA01/04) cells exposed to oxidative stress. A 2', 7'-dichloro-fluorescein diacetate(DCFH-DA) probe was used to measure the levels of endogenous reactive oxygen species(ROS) in human lens epithelial cells(h LECs) exposed to 400 μmol/L H_2O_2 for 1 h. SRA01/04 cells were transfected with either miR-211 mimics, mimic controls, miR-211 inhibitors or inhibitor controls. After 72 h, these cells were exposed to 400 μmol/L H_2O_2 for 1 h, then p53 and Bax m RNA expression were measured using RT-q PCR. p53 and Bax protein expression were also measured by Western blotting analysis. Finally, cell viability was assessed using an MTS assay.RESULTS: Compared to the control group, expression of miR-211 in the anterior lens capsules of age-related cataract patients and in SRA01/04 cells exposed to oxidative stress was significantly increased(P<0.001). Levels of endogenous ROS were significantly elevated in h LECs exposed to oxidative stress(P<0.001). Compared to the mimic control group, the h LECs in the miR-211 mimic group expressed significantly higher levels of p53 and Bax m RNA and protein while cell viability was significantly reduced(P<0.001). Conversely, p53 and Bax m RNA and protein expression were significantly reduced in the miR-211 inhibitor group as compared to the control group, while the cells in this group had much higher levels of cell viability(P<0.001).CONCLUSION: miR-211 is upregulated in the anterior lens capsules of age-related cataract patients. miR-211 decreased the antioxidative stress capacity of lens epithelial cells by upregulating p53 and Bax, while inhibiting cell proliferation and repair. This finding suggests that miR-211 may play a key role in the development of age-related cataracts. | Bo Lu Ian T. Christensen Li-Wei Ma Tao Yu Ling-Feng Jiang Chun-Xia Wang Li Feng Jin-Song Zhang Qi-Chang Yan Xin-Ling Wang | 2018 | International Journal of Ophthalmology(English edition)2018，11，3： | 4 |
| 4 | Ultrathin Acoustic Parity-Time Symmetric Metasurface Cloak显示文摘Invisibility or unhearability cloaks have been made possible by using metamaterials enabling light or sound to fow around obstacle without the trace of refections or shadows.Metamaterials are known for being fexible building units that can mimic a host of unusual and extreme material responses,which are essential when engineering artifcial material properties to realize a coordinate transforming cloak.Bending and stretching the coordinate grid in space require stringent material parameters;therefore,small inaccuracies and inevitable material losses become sources for unwanted scattering that are decremental to the desired efect.Tese obstacles further limit the possibility of achieving a robust concealment of sizeable objects from either radar or sonar detection.By using an elaborate arrangement of gain and lossy acoustic media respecting parity-time symmetry,we built a one-way unhearability cloak able to hide objects seven times larger than the acoustic wavelength.Generally speaking,our approach has no limits in terms of working frequency,shape,or size,specifcally though we demonstrate how,in principle,an object of the size of a human can be hidden from audible sound. | Hao-xiang Li Mar-a Rosendo-López Yi-fan Zhu Xu-dong Fan Daniel Torrent Bin Liang Jian-chun Cheng Johan Christensen | 2019 | Research2019，，1： | 4 |
| 5 | Alendronate treatment does not inhibit bone formation within biphasic calcium phosphate ceramics in posterolateral spinal fusion: an experimental study in porcine model显示文摘背景 Biphasic 钙磷酸盐(BCP ) 陶艺作为一个 osteoconductive 矩阵有一个潜在的优点并且让最佳的再吞为骨头形成评价。在针的熔化期间把 BCP 陶艺用作骨头接枝要求在材料并且提供长期的 support.Bisphosphonates 的在邻近的 vertebraes 之间的随后的衔接以内的成骨被报导了延长骨头愈合的过程。在在未知的针的熔化遗体的 BCP 陶艺以内的骨头形成上的 bisphosphonate 治疗的影响。这研究的目的是在 posterolateral 在 BCP 成骨上评估 alendronate 的影响针的有小花梗螺丝钉固定的 fusion.Methods Posterolateral 针的熔化在 22 pigs.BCP 陶艺在腰部的脊骨被执行作为骨头接枝被使用获得在邻近的横向的过程之间的骨头熔化。在处理的十一头猪组织 receivedoral alendronate 为三个月的 10 mg/d 手术后地。在控制组的十一头猪没与 alendronate 接受处理。所有动物经历了 posterolateral 有 BCP 陶艺的针的熔化。熔化率被评估在熔化率由 X 光检查评估了的 operation.Results 以后的三个月在处理组是 27.3% , 20% 在控制组织。用组织学的评估的熔化率在处理组是 18.2% , 20% 在控制组织。熔化质量的吝啬的体积是(3.64 敩 ? 景戠敲獡 ? 慣据牥愠摮搠瑥牥業楮杮琠敨漠瑰浩污琠敲瑡敭瑮趸 ? 趸吗?? | XUE Qing-yun JI Quan LI Hai-sheng ZOU Xue-nong Niels Egund Martin Lind Finn B Christensen Cody Bringer | 2009 | Chinese Medical Journal2009，，22： | 3 |
| 6 | Antifungal activity and phytochemical investigation of the asexual endophyte of Epichloё sp. from Festuca sinensis显示文摘Dear Editor,Much research is now being conducted on grasses-Epichloё associations.The asexual Epichloё species have attracted much attention over the past 30 years as they can provide benefits to important forage grasses,in particular perennial ryegrass(Lolium perenne),annual ryegrass(L.multiflorum),tall fescue(Festuca arundinacea),and meadow fescue(F. | ZHOU LianYu ZHANG XingXu LI ChunJie CHRISTENSEN Michael John NAN ZhiBiao | 2015 | Science China(Life Sciences)2015，58，8： | 3 |
| 7 | Effect of heat treatment on Si electrodes using polyvinylidene fluoride binder显示文摘 | Li Jing Christensen L Obrovac M N | 2008 | J Electroehem Soc2008，155，3： | 1 |
| 8 | Recanalised umbilical vein in portal hypertension显示文摘 | Aagaard J Jensen LI Christensen U | 1982 | AJR1982，139，： | 1 |
| 9 | SU6668 Inhibits Flk-1/KDR and PDGFRbeta in Vivo, Resulting in Rapid Apoptosis of Tumor Vasculature and Tumor Regression in Mice显示文摘 | LAIRD AD CHRISTENSEN JG LI G | 2002 | FASEB J2002，16，7： | 1 |
| 10 | PAHs in Dated Sediments of Ashtabula River, Ohio, USA显示文摘 | LI K CHRISTENSEN E R VANCAMP R P | 2001 | Environmental Science and Technology2001，35，14： | 1 |
| 11 | Involvement of L-tyrosine and phenol oxidase in the tanning of Aedes aegypti eggs显示文摘 | Li J Christensen B M | 1993 | Insect Biochem Mol Biol1993，23，： | 1 |
| 12 | Interactive effects of water stress and powdery mildew(Blumeria graminis)on the alkaloid production of Achnatherum inebrians infected by Epichlo?endophyte显示文摘Dear Editor,Achnatherum inebrians,also known as drunken horse grass(DHG),is a toxic perennial bunch grass that can be infected by Epichlo?gansuensis or E.inebrians(Chen et al.,2015).It is well known that Epichlo?fungal endophytes can protect their host plants from herbivores by producing different classes of alkaloids.A recent trial demonstrated that sheep exhibited notable toxicity symptoms by directly feeding with endophyte-infected(E+)A.inebrians(Liang et al.,2017). | Nana Li Chao Xia Rui Zhong Yawen Ju Zhibiao Nan Michael J Christensen Xingxu Zhang | 2018 | Science China(Life Sciences)2018，61，7： | 1 |
| 13 | Flow cytometric DNA analy- sis of breast cancers with predominance of carcinoma in situ: a com- parison of the premalignant and malignant components显示文摘 | Ottesen GL Christensen LI Larsen JK | 1995 | Clin Can- cer Res1995，1，8： | 1 |
| 14 | Relationship of hemolymph phenol oxidase and mosquito age in Aedes aegypti显示文摘 | LI J TRACY J W CHRISTENSEN B M | 1992 | J Invertebrate Pathol1992，60，2： | 1 |
| 15 | Erythropoietin is present in thecerebrospinal fluid of neonates 显示文摘 | Juul SE Harcum J Li Y Christensen RD | 1997 | J Pediatr1997，130，3： | 1 |
| 16 | Quantitative trait loci analysis of swine meat quality traits 显示文摘 | Li H D Lund M S Christensen O F | 2010 | J Anim Sei2010，88，9： | 1 |
| 17 | Characteristic pattern analysis of polybromodiphenyl ethers in Great Lakes sediments:Acombination of eigenspace projection and positive matrix factorization analysis显示文摘 | Zou Y H Christensen E R Li A | 2013 | Environmetrics2013，24，1： | 1 |
| 18 | Erythropoietin and erythropoietin receptor in developing human central nervous system显示文摘 | Juul SE Anderson DK Li Y Christensen RD | 1998 | Pediatr Res1998，43，： | 1 |
| 19 | PAHs in dated sediments of Ashtabula River,Ohio,USA显示文摘 | LI KAI CHRISTENSEN E R VAN CAMP R P | 2001 | ES&T2001，35，： | 1 |
| 20 | Crosslinking of polybenzimi- dazole membranes by divinylsulfone post-treatment for high-tempe- rature proton exchange membrane fuel cell applications显示文摘 | Aili D Li Q F Christensen E | 2011 | Polym Int2011，60，8： | 1 |
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