Latitude

摘要： I arrived at Caltech as a graduate student in the summer of 1979.With a BSc degree in physics,I knew little to nothing about seismology or geophysics.The Seismo Lab encouraged new students to immediately start some research with a great latitude on what to work on.That summer I started projects relocating aftershocks of the 1978 Oaxaca earthquake with Karen McNally,learning a normal mode code with Bernard Minster,and investigating the source mechanism of the 1979 St.Elias earthquake with Hiroo Kanamori.

摘要： BACKGROUND The coronavirus disease 2019(COVID-19)course may be affected by environmental factors.Ecological studies previously suggested a link between climatological factors and COVID-19 fatality rates.However,individual-level impact of these factors has not been thoroughly evaluated yet.AIM To study the association of climatological factors related to patient location with unfavorable outcomes in patients.METHODS In this observational analysis of the Society of Critical Care Medicine Discovery Viral Infection and Respiratory Illness Universal Study:COVID-19 Registry cohort,the latitudes and altitudes of hospitals were examined as a covariate for mortality within 28 d of admission and the length of hospital stay.Adjusting for baseline parameters and admission date,multivariable regression modeling was utilized.Generalized estimating equations were used to fit the models.RESULTS Twenty-two thousand one hundred eight patients from over 20 countries were evaluated.The median age was 62(interquartile range:49-74)years,and 54%of the included patients were males.The median age increased with increasing latitude as well as the frequency of comorbidities.Contrarily,the percentage of comorbidities was lower in elevated altitudes.Mortality within 28 d of hospital admission was found to be 25%.The median hospital-free days among all included patients was 20 d.Despite the significant linear relationship between mortality and hospital-free days(adjusted odds ratio(aOR)=1.39(1.04,1.86),P=0.025 for mortality within 28 d of admission;aOR=-1.47(-2.60,-0.33),P=0.011 for hospital-free days),suggesting that adverse patient outcomes were more common in locations further away from the Equator;the results were no longer significant when adjusted for baseline differences(aOR=1.32(1.00,1.74),P=0.051 for 28-day mortality;aOR=-1.07(-2.13,-0.01),P=0.050 for hospital-free days).When we looked at the altitude’s effect,we discovered that it demonstrated a non-linear association with mortality within 28 d of hospital admission(aOR=0.96(0.62,1.47),1.04(0.92,1.19),0.49(0.22,0.90),and 0.51(0.27,0.98),for the altitude points of 75 MASL,125 MASL,400 MASL,and 600 MASL,in comparison to the reference altitude of 148 m.a.s.l,respectively.P=0.001).We detected an association between latitude and 28-day mortality as well as hospital-free days in this worldwide study.When the baseline features were taken into account,however,this did not stay significant.CONCLUSION Our findings suggest that differences observed in previous epidemiological studies may be due to ecological fallacy rather than implying a causal relationship at the patient level.

摘要： In addition to landscape changes,urbanization also brings about changes in environmental factors that can affect wildlife.Despite the common referral in the published literature to multiple environmental factors such as light and noise pollution,there is a gap in knowledge about their combined impact.We developed a multidimensional environmental framework to assess the effect of urbanization and multiple environmental factors(light,noise,and temperature)on life-history traits and breeding success of Barn Swallows(Hirundo rustica)across rural to urban gradients in four locations spanning over 2500 km from North to South China.Over a single breeding season,we measured these environmental factors nearby nests and quantified landscape urbanization over a 1km~2radius.We then analysed the relationships between these multiple environmental factors through a principal component analysis and conducted spatially explicit linear-mixed effects models to assess their effect on lifehistory traits and breeding success.We were particularly interested in understanding whether and how Barn Swallows were able to adapt to such environmental conditions associated with urbanization.The results show that there is significant variation in the exposure to environmental conditions experienced by Barn Swallows breeding across urbanization gradients in China.These changes and their effects are complex due to the behavioural responses ameliorating potential negative effects by selecting nesting sites that minimize exposure to environmental factors.However,significant relationships between landscape urbanization,exposure to environmental factors,and life-history traits such as laying date and clutch size were pervasive.Still,the impact on breeding success was,at least in our sample,negligible,suggesting that Barn Swallows are extremely adaptable to a wide range of environmental features.

摘要： 前不久,戴尔推出了全新的Latitude系列商用笔记本电脑,其中Latitude 7000系列高端商用本也迎来了产品型号上的更新—从上一代的Latitude 7310系列升级到现在的Latitude 7320系列。全新的Latitude 7320系列产品采用第十一代酷睿处理器,同时也对机身设计进行了改款并融入了一系列新技术和新功能。那么升级后的Latitude 7320系列产品能带来怎样的体验呢?我们通过戴尔Latitude 7320二合一笔记本来看一看。

摘要： 在评测完32英寸的商用王者P3222QE后,我们还为它找了一位实力相当的小伙伴——素有“九五至尊”称呼的Latitude 9520。戴尔在2020年初推出Latitude 9000系列的高端笔记本之后,迅速在这个市场上进行产品更迭,9520算是这个系列的第二代产品,事实上,我们去年已经对Latitude 9510进行过评测,对这款平面面积利用率最高、最轻最智能,而且续航快充都无比强大的机型留下了深刻印象,对它的评测可以说“大大超乎我们的期望”,而在Latitude 9520上,我们究竟会给它怎样的评价呢?在今天的“高效商务桌面”的测试环境中,它与P3222QE商用显示器又会擦出哪些火花呢?

摘要： cqvip:近段时间,想要更新自己手上笔记本,思来想去,我决定给大家做一期戴尔Latitude 9420产品评测。Latitude 9000系列可以说是戴尔商用笔记本电脑产品线的巅峰之作,价格并不便宜,是大多企业的商务本首选。同时,它也是为数不多通过市场EVO平台认证的笔记本。

摘要： 日前戴尔公布了两款即将发布的Latitude Rugged坚固本——5430 Rugged半坚固本和7730 Rugged Extreme全坚固本,预计于2021年12月9日起全球发售。戴尔的Latitude Rugged一向在野外极端行业极负盛名,它天生便是为了抵御某些极端恶劣严酷的环境条件而设计的,它不仅能运行日常应用程序,还需要随时随地保持联网,电量不易耗尽,并能在各种极端环境下正常运行。

摘要： Since the first outbreak of the coronavirus disease(COVID-19)in the winter of 2019,this pandemic has resulted in significant global social and economic disruption,as well as global public health and medical crises[1].Climate,weather conditions,and even latitude have now been acknowledged to be directly associated with COVID-19 outbreaks[2-4].It was reported that 60%of the confirmed cases of COVID-19 occurred in areas where the air temperature ranged from 5°Cto 15°C[4].These earlier research results strongly implied that the COVID-19 pandemic might spread cyclically and outbreaks might recur in large cities in the mid-latitudes(for example,the northern part of China)in autumn 2020[4],which has now been confirmed by the third wave of the pandemic.With quarantines and other restrictive legislations and control measures being put in action to contain the spread of the disease[5],the pandemic has also manifested additional obstacles in the treatment of other diseases.For example,a median dose delay of 14(6-20)days was found in patients who received one cycle of gastric chemotherapy in our department from the first outbreak till the spring festival of 2020(n=79).

摘要： CHINAJinggangshan Added to UNESCO’s World Network of Biosphere Reserves in 2012 Jinggangshan Biosphere Reserve is located in southwestern of Jiangxi Province.The reserve has the largest continuous area of primary broad leaf forest ecosystem in the whole sub-tropical zone at latitude 26°N.