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Distinct Modes of Winter Arctic Sea Ice Motion and Their Associations with Surface Wind Variability

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Advances in Atmospheric Sciences 2010年第2期27卷 211-229页

作者：武炳义 mark A. johnson Chinese Academy of Meteorological Sciences Arctic region Supercomputing Center University of Alaska Fairbanks Institute of Marine Science University of Alaska Fairbanks

Using monthly mean sea ice velocity data obtained from the International Arctic Buoy Programme （IABP） for the period of 1979–1998 and the monthly mean NCEP/NCAr re-analysis dataset （1960–2002）, we investigated the spatiotemporal evolution of the leading sea ice motion mode （based on a complex correlation matrix constructed of normalized sea ice motion velocity） and their association with sea level pressure （SLP） and the predominant modes of surface wind field variability. The results indicate that the leading winter sea ice motion mode’s spatial evolution is characterized by two alternating and distinct sea ice modes, or their linear combination. One mode （M1） shows a nearly closed cyclonic or anti-cyclonic circulation anomaly in the Arctic Basin and its marginal seas, resembling to a large extent the response of sea ice motion to the Arctic Oscillation （AO）, as many previous studies have revealed. The other mode （M2） displays a coherent cyclonic or anti-cyclonic circulation anomaly with its center close to the Laptev Sea, which has not been identified in previous observational studies. In fact, M1 and M2 respectively reflect the responses of sea ice motion to two predominant modes of winter surface wind variability north of 70 ？ N, which well correspond, with slight differences, to the first two modes of EOF analysis of winter monthly mean SLP north of 70 ？ N. These slight differences in SLP anomalies lead to a difference of M2 from the response of sea ice motion to the dipole anomaly. Although the AO significantly influences sea ice motion, it is not crucial for the existence of M1. The new sea ice motion mode （M2） has the largest variance and clearly differs from the response of winter monthly mean sea ice motion to the dipole anomaly in SLP fields, and corresponding SLP anomalies also show differences compared to the dipole anomaly. This study indicates that in the Arctic Basin and its marginal seas, slight differences in SLP anomaly patterns can force distinctl

关键词： distinct mode Arctic sea ice motion Arctic surface wind forcing

Void fill and support techniques to stabilize drift excavated through a transition zone mined by a TBM at the Stillwater mine

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International Journal of Mining Science and Technology 2017年第1期27卷 71-76页

作者： johnson Josh Jacobs Curt Ferster mark Tadolini Stephen Stillwater Mining Company NyeMT 59061USA Minova GeorgetownKYUSA

Stillwater Mining Company is the only U.S. producer of platinum group metals （PGMs） and the largest producer outside of South Afiica and russia. The company controls a considerable portion of the J-M reef and is currently developing the ＂Blitz Project,＂ which will provide a main haulage level, ore pass systems, backfill plants, and fiow-through ventilation to increase production and ensure sustainable extraction of this critical strategic mineral. While driving two sub-parallel footwall laterals 8125 m in length, one of the development drifts experienced a massive fall in a geologically disturbed area created by a mafic dike intrusion. Combinations of a void fill material （Tekseal）, polyurethane injection, fore poling coupled with steel arches, and supplemental bolting allow safe and efficient advance through this geologically dis- turbed zone. This paper presents the details of this project.

关键词： TBM Ground Dike Cutterhead

《万里千寻》:1949年后的张大千人生一警

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艺术品鉴 2024年第2期 152-155页

作者：马克D.约翰逊旧金山州立大学(SFSU)文学院

2023年12月,由张伟民执导的纪录片《万里干寻》摘得第20届广州国际纪录片节“中国故事优秀纪录长片”奖和圣保罗国际电影节“最佳国际纪录片”两项大奖,并于2024年1月18日在香港地区上映,影片以画家张大千1949年离开中国飘泊海外为重心... 详细信息

2023年12月,由张伟民执导的纪录片《万里干寻》摘得第20届广州国际纪录片节“中国故事优秀纪录长片”奖和圣保罗国际电影节“最佳国际纪录片”两项大奖,并于2024年1月18日在香港地区上映,影片以画家张大千1949年离开中国飘泊海外为重心,重构这位“画作抵万金”的国画大师鲜为人知的下半生。《万里千寻》的筹备与拍摄历时12年,张伟民辗转全球20多个国家和地区,探访张大千的子女、家人、朋友、弟子以及艺术家和国际上研究张大千的学者共100多人,通过影片解读张大千后半生的传奇故事。

关键词：张大千纪录片国画大师千寻国际电影节传奇故事后半生圣保罗

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张大千加州时期杰作《秋山夕照》

艺术品鉴 2024年第2期 156-159页

作者：马克D.约翰逊不详

张大千先生一生四海为家、交游广阔,所到之处必结交名流同道,留下许多佳话。自上世纪60年代中期频繁造访加州,1971年购置“环苹庵”正式移居,直至1976年搬去中国台湾,大干先生与加州结下了一段十余年的缘分。

关键词：张大千中国台湾加州杰作

Neonatal Direct rigid Laryngoscopy and Bronchoscopy: A Near Miss

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Open Journal of Anesthesiology 2024年第4期14卷 126-130页

作者： Dennis E. Feierman mark Kronenfeld Jacob Sutton Gil Zoizner Evan P. Salant Department of Anesthesiology Maimonides Medical Center New York USA rutgers robert Wood johnson University Hospital New Brunswick USA Meir Hospital Clalit Health Services Kefar Sava Israel

Airway management is a skill necessary for healthcare providers who manage patients. Intubation is a skill that both anesthesiologists and intensivists use daily. We present a case of a neonate that developed significant worsening stridor after a successful intubation for a hernia repair. After 4 intubation attempts, with easy visualization of the vocal cords and unsuccessful placement of the endotracheal tube, the patient was emergently brought to the operating room for evaluation.

关键词： Neonate Direct Laryngoscopy Intubation

On COVID-19 and Membrane Lipids and Public Health

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粮油食品科技 2022年第3期30卷 55-58页

作者： Yi-qun WANG mark johnson Walter F.SCHMIDT Hong-wei rEN Michael A CrAWFOrD Department of Metabolism Digestion and ReproductionChelsea and Westminster Hospital CampusImperial CollegeLondon SW109NHUK United States Department of Agriculture Agricultural research Service BeltsvilleMD 20705USA Division of Virology Department of PathologyUniversity of CambridgeCambridge CB21QPUK

Coronavirus has a lipid *** replication requires hijacking the rNA tools of the host to synthesize virion protein,that then has to be wrapped in a lipid membrane to enable the budding off which extends the *** studies implicate certain essential fatty acids with replication suppression *** lipid membrane is commonly thought of as a fatty barrier to water *** is however highly ordered and compositionally specific to cellular and sub cellular *** will likely also be an optimum specificity for the viral *** DNA,rNA and protein compositions are not affected by diet,the lipid membrane ***,the greater sensitivity of males over females to inadequacy of these essential fatty acids and membrane integrity has been known since the 1960 *** evidence that arachidonic and docosahexaenoic acids exhibiting anti-viral,immune,anti-inflammatory,blood pressure control and resolvin activity,their status needs to be urgently examined in relation to the prevention and therapy for *** would also be advisable to re-assess food *** lipid requirements for the membrane rich systems as in the brain,nervous,vascular and immune systems have not been *** is little doubt these were significant in shaping the human genome over several million *** from such conditions would be predicted to put populations at risk to disorder and infection,with males being more at risk than females.

关键词： coronavirus Covid-19 arachidonic docosahexaenoic membrane lipid male-female risk public health

Shape Control of Doped Semiconductor Nanocrystals (d-Dots)

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Nano research 2008年第2期1卷 138-144页

作者： ranjani Viswanatha David M.Battaglia mark E.Curtis Tetsuya D.Mishima Matthew B.johnson Xiaogang Peng Department of Chemistry&Biochemistry University of ArkansasFayettevilleAR 72701USA NN-Labs LLC FayettevilleAR 72703USA Joint MrSEC at the University of Oklahoma and the University of Arkansas FayettevilleAR 72701USA Homer L.Dodge Department of Physics and Astronomy University of OklahomaNormanOK 73019USA

Formation of Mn2+-doped ZnSe quantum dots(Mn:ZnSe d-dots)with both branched and nearly spherical shapes has been *** analysis indicates that the Mn2+dopants were localized in the core of a branched *** growth of branched d-dots,rather than spherical ones,was achieved by simply varying the concentration of two organic additives,fatty acids,and fatty *** photoluminescence properties of the branched nanocrystals were explored and compared with those of the nearly spherical particles.

关键词： Doped quantum dot(d-dot) shape control photoluminescence

World Class Elite Breaststrokers Downward Kick EMG Muscle Activity of the Gluteus Maximus, Quadriceps Femoris, Hamstring, Gastrocnemius Medialis, rectus Abdominal, and Erector Spinae

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Psychology research 2024年第2期14卷 64-69页

作者： Takahisa Ide William F.johnson Sadafumi Takise Noriko Inada Hiromasa Fujimori Takeharu Fujimori Emi Moronuki Ai Soma Kazuki Watanabe Asahi Nagahata Iryna Glavnyk mark Nikolaev Bogdan Plavin Osaka University of Health and Sport Sciences OsakaJapan Grand Canyon University Phoenix Phoenix Swim Club Paradise ValleyUSA Texas A&M University Corpus Corpus ChristiUSA Miki House TokyoJapan Valparaiso University ValparaisoUSA

This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite *** compared average muscle activity of the gluteus maximus,quadriceps femoris(vastus medialis and rectus femoris),hamstring/long head of the biceps femoris,gastrocnemius medialis,rectus abdominal,and erector spinae when using the downward breaststroke kick *** find that when this sample of swimmers utilized the downward breaststroke kick,max speed and velocity per stroke increased,measured by 12,788 EMG samples,where the results are highly correlated to duration of the aerodynamic buoyant force in breaststroke kick *** increases in performance observed from measuring the world class elite swimmers is highly correlated to the duration of the kick aerodynamic buoyant *** this sample of elite swimmers,the longer a swimmer demonstrates a buoyant force breaststroke kick,the lower the time in a 100 breaststroke.

关键词： swimming breaststroke downward kick EMG imagination world class elite swimmers

Magnesium activation affects the properties and phosphate sorption capacity of poultry litter biochar

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Biochar 2023年第1期5卷 1117-1130页

作者： Joshua T.Padilla Donald W.Watts Jeffrey M.Novak Vasile Cerven James A.Ippolito Ariel A.Szogi mark G.johnson United States Department of Agriculture Agricultural Research ServiceCoastal Plains SoilWater and Plant Research CenterFlorenceSC 29501USA School of Environment and Natural resources The Ohio State UniversityColumbusOH 43210USA Center for Public Health and Environmental Assessment United States Environmental Protection AgencyCorvallisOR 97331USA

Biochars with a high affinity for phosphorus(P)are promising soil amendments for reducing P in agricultural *** litter(PL)is an abundant biochar ***,PL-derived biochars are typically high in soluble P and therefore require chemical modification to become effective P *** study investigated the effect of magnesium(Mg)activation on extractable P(EP)and P sorption capacities of PL-derived *** was produced at 500-900°C from PL activated with 0-1 M *** differentially aged PL feedstocks were evaluated(1-,3-5-,and 7-9-year-old).Increased Mg activation level and pyrolysis temperature both resulted in EP reductions from the ***,biochars produced at temperatures≥700°C from PL activated with≥0.25 M Mg had negligible EP.X-ray diffractograms indicated that increased Mg loading favored the formation of stable Mg_(3)(PO_(4))_(2) phases while increasing temperature favored the formation of both Mg_(3)(PO_(4))_(2) and Ca_(5)(PO_(4))_(3)*** P sorption capacities(Pmax)of the biochars were estimated by fitting Langmuir isotherms to batch sorption data and ranged from 0.66-10.35 mg g^(−1).Average Pmax values were not affected by PL age or pyrolysis temperature;however,biochars produced from 1 M Mg-activated PL did have significantly higher average Pmax values(preater abundance of ***,the results demonstrated that Mg activation is an effective strategy for producing PLderived biochars with the potential ability to reduce P loading into environmentally sensitive ecosystems.

关键词： sorption activation pyrolysis