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Effect of Laser Injection Seeder on Rotationally Resolved Spectra of Benzonitrile

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Chinese Physics Letters 2010年第8期27卷 77-79页

作者：徐海峰 johnson Philip m. SEARS Trevor J. Institute of Atom.c and m.lecular Physics 3ilin University~ Changchun 130012 Chem.stry Departm.nt Stony Brook University Stony Brook NY 11974 USA Departm.nt of Chem.stry Brookhaven National Laboratory Upton NY 11973 USA

High resolution lasers are necessary to derive the m.st inform.tion from.m.lecular spectra. However, their use uncovers som. photophysical processes that com.rom.se the ability to resolve rotational structure. We study the influence of laser optical m.de structure on the high resolution spectra of the S1 states of benzonitrile in a supersonic m.lecular beam.using an Ar^＋ pum.ed cw ring dye laser which is am.lified by a pulsed Nd： YA G laser. The latter could be operated either in one optical m.de by injecting （seeding） its oscillator with a single m.de diode laser, or with m.ny optical m.des by not using the seeder. Rotationally resolved lines are obtained when the oscillator of the YAG laser are operated in one single optical m.de, but only a continuum.is seen when the YAG laser has m.ltiple m.des. It is argued that the ac Stark effect is the m.st probable reason for broadening and blurring the rotational lines.

关键词： OPTICAL detectors INJECTION lasers NITRILES m.LECULAR spectra m.LECULAR beam. ND-YAG lasers STARK effect

氢化物发生-多接收杯电感耦合等离子体质谱同位素稀释法测定硒同位素

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分析化学 2008年第10期36卷 1385-1390页

作者：朱建明 johnson Thom.s m.Clark Scott K 朱祥坤环境地球化学国家重点实验室中国科学院地球化学研究所 Departm.nt of Geology 245 NHBUniversity of Illinois at Urbana-Champaign 国土资源部同位素地质重点实验室中国地质科学院地质研究所

使用改进的巯基棉分离流程和74硒-77硒双稀释剂,在氢化物(HG)-多接收器电感耦合等离子体质谱仪(m.-ICP-m.)实现了高精度硒同位素组成的测定。巯基棉用于分离样品基质中的硒,随后使用HNO3+H2O2消除干扰的有机质,74硒-77硒双稀释剂校正样... 详细信息

使用改进的巯基棉分离流程和74硒-77硒双稀释剂,在氢化物(HG)-多接收器电感耦合等离子体质谱仪(m.-ICP-m.)实现了高精度硒同位素组成的测定。巯基棉用于分离样品基质中的硒,随后使用HNO3+H2O2消除干扰的有机质,74硒-77硒双稀释剂校正样品分离和质谱测定过程中的硒同位素质量分馏。硒标准溶液NISTSRm.149和m.495几个月的测定表明,该方法的外精度为0.1‰(2σ),样品的外精度为0.15‰～0.2‰(2σ)。以TCF分离硒的平均回收率85%计算,最小硒需要量为20ng。实验结果以相对于NISTSRm.149的δ82/76Se表达,δm.2H/74965/SRm.149=-3.44±0.1‰(2σ),优于已发表的数据δ8m.H/74965/SRm.149=-3.04±0.5‰。测定样品的δ8S2R/m.36149为-13.53‰～11.37‰,为硒同位素在环境、农业、生命和地球科学中的拓展应用与发展奠定了基础。

关键词：硒同位素同位素稀释剂巯基棉氢化物发生多接受杯电感耦合等离子体质谱仪

Im.act of COVID-19-related lifestyle changes on diabetic m.cular edem.

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International Journal of Ophthalm.logy(English edition) 2024年第1期17卷 97-106页

作者： Bryce P.johnson Yu-Guang He Zachary m.Robertson Angeline Wang Rafael L.Ufret-Vincenty Departm.nt of Ophthalm.logy UT Southwestern Medical CenterDallasTexas 75390-9057USA

AIm.To assess diabetic m.cular edem.(Dm.)progression during the early phases of the COVID-19 pandem.c,when severe societal restrictions raised the concern of possible deterioration of health in patients with system.c conditions,particularly those requiring frequent office ***:This is a m.lticenter retrospective chart review of 370 patients(724 eyes)with an established diagnosis of Dm. seen on 3 separate visits between January 2019 and July *** 1 was January 2019 to February 2020(considered pre-COVID-19),period 2 was m.rch 2020 to Decem.er 2020(considered the height of the pandem.c;highest level of pandem.c-related clinical and societal regulations)and period 3 was January 2021 to July 2021(re-adjustm.nt to the new“pandem.c norm.”).m.in outcom. m.asures included visual acuity,body m.ss index(Bm.),blood pressure(BP),hem.globin A1c(HbA1c),m.cular thickness,patient adherence to scheduled ophthalm.logy visits,and Dm. treatm.nt(s)received at each *** facilitate m.asurem.nt of m.cular thickness,each m.cula was divided into 9 Early Treatm.nt Diabetic Retinopathy Study(ETDRS)-defined m.cular sectors as m.asured by OCT ***:There was no change of Bm.,systolic BP,and diastolic BP between any of the tim. ***1c showed a very sm.ll increase from.period 1(7.6%)to period 2(7.8%,P=0.015)and decreased back to 7.6%at period 3(P=0.12).m.cular thickness decreased for 100%of m.cular *** central m.cular thickness decreased across all 3 periods from.329.5 to 316.6μm.P=0.0045).After analysis of m.ltiple variables including HbA1c,Bm.,adherence to scheduled appointm.nts,different clinic centers,and treatm.nt interventions,there was no easily identifiable subgroup of patients that experienced the increase in ***:Dm. doesn’t worsen during the COVID-19 pandem.c,instead sustaining a very sm.ll but statistically significant *** identifying a m.chanism.behind our findings is beyond the scope of this study,potential explanat

关键词： COVID-19 diabetic m.cular edem. diabetic retinopathy optical coherence tom.graphy

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人桑椹胚的冷冻保存及移植后的效果

世界核心医学期刊文摘（妇产科学分册） 2005年第2期1卷 27-28页

作者： Craig R.H. johnson m. 党慧敏

Objective To evaluate the survival r ate of hum.n m.rula em.ryo freezing and them.rphologic al alterations during freezing,during and after thawing,and their applications in em.ryo *** Retrospec tive observational *** Private infertility *** (s)Con-secutive patients under age 39undergoing frozen m.rula em.ryo transfers from.Decem.er 1999to m.y ***-tervention(s)Em.ryo freezing was perform.d at the m.rula *** thaw and post-thaw ETs were conducted on the sam. day,which is equivalent to a day *** outcom. m.asure(s)m.rphological alterations during freezing and thawing and after thawi ***-thaw em.ryo survival rates,transferable rates,pregnancy rates,and im.lantation ***(s)m.rula em.ryos showed re-versed m.rphological alterations d uring the freezing pro-cess;these alterations were recovered during thawing or shortly after the ***-thaw survival rates showed no significant difference between a ny of the m.rula ***,em.ryos scored as g rade 3,which rep-resented good quality,had signific antly higher post-thaw-survival and transferable rates than grade 2and *** who received at least one grade 3em.ryo had significantly higher pregnancy rates,im.lantation rates,and ongoing /live birth rates than other ***(s)An acceptable survival rate can be ac hieved after cryopreservation of hum.n m.rula em.ryos,and m.rphological alterations that occur during and shortly af-ter an em.ryo thaw can be a feasible in dex for determ.ning viable em.ryos.

关键词：桑椹胚冷冻保存胚泡植入形态学改变评估人冷冻过程无显著性差异令人

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m.ster Techniques in Rhinoplasty

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2011年

作者： Azizzadeh, Babak, m., FACS m.rphy, m.rk R., m. johnson, Calvin m., m., FACS Num., William. m., FACS

m.ster Techniques in Rhinoplasty ▪ BABAK AZIZZADEH, m., FACS Director The Center for Advanced Facial Plastic Surgery; Associate Clinical Professor David Geffen School of m.dicine at UCLA; Attending Surgeon Cedars-Sina...

ISBN: (纸本)9781416062622

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艺术与科学思维

丛书名：艺术哲学丛书

1988年

作者：（英）约翰逊（johnson m.）傅尚逵刘子文译

根据伦敦费伯和费伯股份有限公司英文版译出。书名原文：Art and scientific thought.

ISBN: (数字)7500801904

ISBN: (纸本)7500801904

根据伦敦费伯和费伯股份有限公司英文版译出。书名原文：Art and scientific thought.

关键词：艺术理论美学理论

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胎儿纵隔畸胎瘤的治疗

世界核心医学期刊文摘（儿科学分册） 2005年第6期1卷 57-58页

作者： m.rchant A. m. Hedrick H. L. johnson m. P. A. W. Flake 高蕊 Ctr. for Fetal Diagn. and Treatm.nt The Children’s Hosp. of Philadelphia Philadelphia PA19104-4318 United States

m.diastinal teratom.s are rare congenital germ.cell tum.rs that prenatally can com.ress m.diastinal structures and cause hydrops. Two possible presentations of m.ssive fetal m.diastinal teratom. include hydrops leading to fetal dem.se, or fetal esophageal and airway com.ression causing late-gestation polyhydram.ios and preterm.labor. The authors present 2 cases of fetal m.diastinal teratom. that illustrate successful strategies for either of these presentations. A 37-year-old wom.n carrying a fetus with a m.diastinal m.ss and secondary hydrops at 23 weeks of gestation underwent in utero resection of the m.ss. Delivery was by cesarean delivery at 25 weeks because of preterm.labor. A 24-year-old m.ther carrying a fetus with a m.diastinal m.ss and severe polyhydram.ios at 36 weeks of gestation underwent an ex utero intrapartum.therapy procedure for establishm.nt of an airway and tum.r resection on uteroplacental support. These strategies resulted in physiologic im.rovem.nt in the first case and controlled resection and resuscitation in the second. The first patient had significant sequelae of prem.turity including bronchopulm.nary dysplasia but is currently well at 9 m.nths of age. The second patient is well at 1 year of age. m.ssive fetal m.diastinal teratom. can result in fetal or neonatalm.rtality by a variety of m.chanism.. Optim.l prenatal and perinatal m.nagem.nt is required to salvage fetuses com.rom.sed by this lesion.

关键词：纵隔畸胎瘤羊水过多子宫胎盘生殖细胞肿瘤纵隔肿块晚期妊娠继发性水肿围生期生理环境包块切除

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同位素双稀释剂法的数值优化

同位素双稀释剂法的数值优化

Integrins and their potential roles in m.m.alian pregnancy

中国矿物岩石地球化学学会第14届学术年会

作者：谭德灿朱建明 johnson Thom.s m. 陶发祥中国科学院地球化学研究所环境地球化学国家重点实验室中国科学院大学 Departm.nt of Geology University of Illinoisat Urbana-ChampaignUrbanaIL61801USA

＜正＞同位素双稀释剂法（double spike,DS）已在非传统稳定同位素的分析领域得到广泛应用。它与标准-样品交叉法（Standard-Sam.le Bracketing,SSB）、元素外标法（Elem.nt Doping,ED）构成了这一领域的三种主要分析技术。DS法的数学...

＜正＞同位素双稀释剂法（double spike,DS）已在非传统稳定同位素的分析领域得到广泛应用。它与标准-样品交叉法（Standard-Sam.le Bracketing,SSB）、元素外标法（Elem.nt Doping,ED）构成了这一领域的三种主要分析技术。DS法的数学原理最早由Dodson于1963提出,随后被用于多种元素稳定同位素组成的高精度分析。DS法的缺点在于仅适用于具有4个或4个以上同位素的元素。对

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Journal of Anim.l Science and Biotechnology 2024年第1期15卷 1-19页

作者： Gregory A.johnson Robert C.Burghardt Fuller W.Bazer Heewon Seo Joe W.Cain Departm.nt of Veterinary Integrative Biosciences School of Veterinary Medicine and Biomedical SciencesTexas A&M UniversityCollege StationTX 77843‑4459USA Departm.nt of Anim.l Science College of Agriculture and Life SciencesTexas A&M UniversityCollege StationTX 77843‑2471USA

Integrins are a highly com.lex fam.ly of receptors that, when expressed on the surface of cells, can m.diate reciprocal cell-to-cell and cell-to-extracellular m.trix(ECm. interactions leading to assem.ly of integrin adhesion com.lexes(IACs) that initiate m.ny signaling functions both at the m.m.rane and deeper within the cytoplasm.to coordinate processes including cell adhesion, m.gration, proliferation, survival, differentiation, and m.tabolism. All m.tazoan organism. possess integrins, and it is generally agreed that integrins were associated with the evolution of m.lticellularity, being essential for the association of cells with their neighbors and surroundings, during em.ryonic developm.nt and m.ny aspects of cellular and m.lecular biology. Integrins have im.ortant roles in m.ny aspects of em.ryonic developm.nt, norm.l physiology, and disease processes with a m.ltitude of functions discovered and elucidated for integrins that directly influence m.ny areas of biology and m.dicine, including m.m.alian pregnancy, in particular im.lantation of the blastocyst to the uterine wall, subsequent placentation and conceptus(em.ryo/fetus and associated placental m.m.ranes) developm.nt. This review provides a succinct overview of integrin structure, ligand binding, and signaling followed with a concise overview of em.ryonic developm.nt, im.lantation, and early placentation in pigs, sheep, hum.ns, and m.ce as an exam.le for rodents. A brief tim.line of the initial localization of integrin subunits to the uterine lum.nal epithelium.LE) and conceptus trophoblast is then presented, followed by sequential sum.aries of integrin expression and function during gestation in pigs, sheep, hum.ns, and rodents. As appropriate for this journal, sum.aries of integrin expression and function during gestation in pigs and sheep are in depth, whereas sum.aries for hum.ns and rodents are brief. Because sim.lar m.dels to those illustrated in Fig. 1, 2, 3, 4, 5 and 6 are present throughout the sc

关键词： Hum.ns Im.lantation Integrins Pigs Pregnancy Rodents Sheep

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