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Speed and surface steepness affect internal tibial loading during running

Journal of Sport and Health Science 2024年第1期13卷 118-124页

作者： Hannah Rice markus Kurz Patrick mai Leon Robertz Kevin bill Timothy R.Derrick Steffen Willwacher Department of Physical Performance Norwegian School of Sport SciencesOslo 0806Norway Sports Tech Research Centre Mid Sweden UniversityÖstersund SE-83125Sweden Department of mechanical and Process Engineering Offenburg University of Applied SciencesOffenburg 77652Germany Institute of Biomechanics and Orthopaedics German Sport University CologneCologne 50933Germany Department of Kinesiology Iowa State UniversityAmesIA 50011USA

Background:Internal tibial loading is influenced by modifiable factors with implications for the risk of stress *** encounter varied surface steepness(gradients)when running outdoors and may adapt their speed according to the *** study aimed to quantify tibial bending moments and stress at the anterior and posterior peripheries when running at different speeds on surfaces of different ***:Twenty recreational runners ran on a treadmill at 3 different speeds(2.5 m/s,3.0 m/s,and 3.5 m/s)and gradients(level:0%;uphill:+5%,+10%,and+15%;downhill:-5%,-10%,and-15%).Force and marker data were collected synchronously *** moments were estimated at the distal third centroid of the tibia about the medial-lateral axis by ensuring static equilibrium at each 1%of *** was derived from bending moments at the anterior and posterior peripheries by modeling the tibia as a hollow ***-way repeated-measures analysis of variance were conducted using both functional and discrete statistical ***:There were significant main effects for running speed and gradient on peak bending moments and peak anterior and posterior *** running speeds resulted in greater tibial *** uphill at+10%and+15%resulted in greater tibial loading than level *** downhill at-10%and-15%resulted in reduced tibial loading compared to level *** was no difference between+5%or-5%and level ***:Running at faster speeds and uphill on gradients≥+10%increased internal tibial loading,whereas slower running and downhill running on gradients≥-10%reduced internal *** running speed according to the gradient could be a protective mechanism,providing runners with a strategy to minimize the risk of tibial stress injuries.

关键词： Bending moments Gradient musculoskeletal modeling Overuse injury Tibial stress Training factors

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解码火星的天文学家欧仁·米歇尔·安东尼亚第

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中国国家天文 2024年第2期18卷 28-35页

作者：比尔·希恩刘晗(译) 不详北京外国语大学北京师范大学对外经济贸易大学英语学院

这位希腊裔法国天文学家称得上是历史上最杰出的行星目视观测者。世间所有行星天文学家里,欧仁·米歇尔·安东尼亚第(Eugene michel Antoniadi)是最有名的其中一位。他所绘出的火星图不仅准确细致,艺术性也极强,因而闻名于世。

关键词：目视观测天文学家火星行星米歇尔艺术性

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Investigation of La_(9.33)Si_6O_(26) Oxygen Ionic Conductor

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Journal of materials Science & Technology 2007年第5期23卷 629-632页

作者： Hong ZHANG Zhicheng LI bill Bergman Xiaodong ZOU School of materials Science and Engineering Central South University Changsha 410083 China Department of materials Science and Engineering School of Industrial Engineering and Management Royal Institute of Technology SE 100 44 Stockholm Sweden Structure Chemistry Arrhenius Laboratory Stockholm University SE 10691 Stockholm Sweden

La9.335i6O26 oxygen ionic conductor was synthesized by solid state reaction method. Its structure was deter- mined by single-crystal X-ray diffraction analysis at room temperature. The results showed that La9.33Si6O26 oxide has the apatite structure with space group P63/m. AC impedance measurements indicated that the oxides sintered in nitrogen have much higher conductivity than those sintered in air. The effects of grain boundaries on the conductivity were discussed.

关键词： La9.33Si6O26 Crystal structure Oxygen ionic conductor Conductivity

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The role of artificial intelligence technology in the care of diabetic foot ulcers: the past, the present, and the future

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World Journal of Diabetes 2022年第12期13卷 1131-1139页

作者： Joseph m Pappachan bill Cassidy Cornelius James Fernandez Vishnu Chandrabalan moi Hoon Yap Department of Endocrinology&metabolism Lancashire Teaching Hospitals NHS TrustPreston PR29HTUnited Kingdom Faculty of Science and Engineering Manchester Metropolitan UniversityManchester M156BHUnited Kingdom Department of Endocrinology&metabolism Pilgrim HospitalBoston PE219QSUnited Kingdom Department of Data Science Lancashire Teaching Hospitals NHS TrustPreston PR29HTUnited Kingdom

Foot ulcers are common complications of diabetes mellitus and substantially increase the morbidity and mortality due to this *** care by regular monitoring of the progress of healing with clinical review of the ulcers,dressing changes,appropriate antibiotic therapy for infection and proper offloading of the ulcer are the cornerstones of the management of foot *** the progress of foot ulcers can be a challenge for the clinician and patient due to logistic issues such as regular attendance in the *** clinics are often busy and because of manpower issues,ulcer reviews can be delayed with detrimental effects on the healing as a result of a lack of appropriate and timely changes in *** photographs have been historically useful to assess the progress of diabetic foot ulcers over the past few *** phones with digital cameras have recently revolutionized the capture of foot ulcer *** can send ulcer photographs to diabetes care professionals electronically for remote monitoring,largely avoiding the logistics of patient transport to clinics with a reduction on clinic *** intelligence-based technologies have been developed in recent years to improve this remote monitoring of diabetic foot ulcers with the use of mobile *** is expected to make a huge impact on diabetic foot ulcer care with further research and development of more accurate and scientific technologies in *** clinical update review aims to compile evidence on this hot topic to empower clinicians with the latest developments in the field.

关键词： Diabetic foot ulcers Photographic monitoring Artificial intelligence technology Digital photography mobile app COVID-19 pandemic

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Carbon capture and sequestration:The roles of agriculture and soils

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International Journal of Agricultural and Biological Engineering 2016年第1期9卷 1-8页

作者： bill Stout Rattan Lal Curtis monger michigan State University East LansingMichigan 48824USA Texas A&m University College StationTexas 77843-2117USA Carbon management and Sequestration Center The Ohio State UniversityColumbusOhio 43210USA Pedology and Environmental Science New Mexico State UniversityLas CrucesNew Mexico 88003USA

Renewable energy as a replacement for fossil fuels is highly desirable,but the reality is that fossil fuels(especially coal and petroleum)will be major sources of global energy for many decades to ***,carbon capture is vital to reduce release of carbon emissions and other GHG’s to the atmosphere thereby mitigating global *** presentation is a review of the role of agriculture and soils in carbon *** sequestration in soils is the process of transferring CO2 from the atmosphere into soils through crop *** carbon sequestration increases with practices long recommended to increase yields,such as no-till,manure application,agroforestry and cover *** is a Win-Win-Win strategy―advancing food security,improving the environment,and mitigating global *** enrichment in greenhouse culture is in widespread use and has been adopted by many commercial *** results in remarkable increases in yields of flowers and *** has shown the same increase in yields of trees and field crops with higher CO2 *** question is,how can CO2 be applied to field crops to increase yields?Restoration of desertified lands would improve soil quality,increase the pool of C in soils and forests,reduce CO2 emission to the atmosphere,and improve soil *** of additional carbon in soils would reduce CO2 emissions to the atmosphere thus mitigating global *** of forests is important,but real trees have ecological *** trees could be used to absorb CO2 from the air any place on the planet,from any source―power plants,vehicles,and all industrial *** of CO2 in irrigation water could reduce the pH and help restore alkaline *** is needed to further clarify the cost and benefit of many agriculture technologies for capturing and storing carbon.

关键词： carbon capture sequestration soils agriculture parasitic cost of carbon capture and sequestration

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ANTI-INFLAmmATORY　DRUGS,KIDNEY　FUNCTION,AND　EXERCISE

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中国运动医学杂志 1998年第2期 184-188页

作者： Em bill Farquhar m.S W.Larry Kenney

ＡＮＴＩ－ＩＮＦＬＡＭＭＡＴＯＲＹＤＲＵＧＳ，ＫＩＤＮＥＹＦＵＮＣＴＩＯＮ，ＡＮＤＥＸＥＲＣＩＳＥＢｉｌｌＦａｒｑｕｈａｒ，Ｍ．Ｓ．ＮｏｌｌＰｈｙｓｉｏｌｏｇｉｃａｌＲｅｓｅａｒｃｈＣｅｎｔｅｒ，ＴｈｅＰｅｎｎｓｙｌ...

ＡＮＴＩ－ＩＮＦＬＡＭＭＡＴＯＲＹＤＲＵＧＳ，ＫＩＤＮＥＹＦＵＮＣＴＩＯＮ，ＡＮＤＥＸＥＲＣＩＳＥＢｉｌｌＦａｒｑｕｈａｒ，Ｍ．Ｓ．ＮｏｌｌＰｈｙｓｉｏｌｏｇｉｃａｌＲｅｓｅａｒｃｈＣｅｎｔｅｒ，ＴｈｅＰｅｎｎｓｙｌｖａｎｉａＳｔａｔｅＵｎｉｖｅｒｓ...

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A dual-path,current-sensing resistor-free boost LED driver with fast PWm dimming

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Journal of Semiconductors 2013年第4期34卷 87-93页

作者：周敏超吕旦竹程林 bill Yang Liu 洪志良 State Key Laboratory of ASIC & System Fudan University Analog Devices

A boost LED driver featuring a high PWm dimming ratio and optimized efficiency is presented. This LED driver, which has a low dropout voltage and is able to drive 3-7 LEDs in series with constant output current and fast PWm dimming, provides an alternative technique for brightness adjustment. A dual-path control scheme with automatic switching and state maintenance is proposed. meanwhile, a cascode current mirror structure is applied with the output transistor multiplexed as an LED PWm dimming transistor. Implemented in 0.5 #m 25 V BCD process, the measurement results show that a voltage conversion range of 5 V input to 6-24 V output with constant output current is obtained. With automatically switching dual-path control and an optimized current mirror, the response time during PWm dimming is reduced to as low as 240 ns and the efficiency keeps above 89% over a wide PWm dimming ratio @ 250 mA output current.

关键词： boost LED driver constant current fast PWm dimming dual-path multiplex efficiency

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Removal of arsenite by reductive precipitation in dithionite solution activated by UV light

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Journal of Environmental Sciences 2018年第12期30卷 168-176页

作者： Bahngmi Jung Aya Safan Yuhang Duan Vishakha Kaushik bill Batchelor Ahmed Abdel-Wahab Chemical Engineering Program Texas A&M University at Qatar Education City Zachry Department of Civil Engineering Texas A&M University College Station

This study investigates the removal of arsenite（As（III）） from water using dithionite activated by UV light. This work evaluated the removal kinetics of As（III） under UV light irradiation as affected by dithionite dose and light intensity, and characterized the nature of the precipitated solids using XPS and SEm-EDS. Photolysis of dithionite was observed by measuring dithionite concentration using UV absorbance at 315 nm. This study also investigated the effect of UV light path length on soluble As concentrations to understand resolubilization mechanisms. Total soluble As concentrations were observed to decrease with reaction time due to reduction of arsenite to form solids having a yellow-orange *** removal mechanism was found to be reductive precipitation that formed solids of elemental arsenic or arsenic sulfide. However, these solids were observed to resolubilize at later times after dithionite had been consumed. Resolubilization of As was prevented and additional As removal was obtained by frequent dosing of dithionite throughout the experiment. As（III） removal is attributed to photolysis of dithionite by UV light and production of reactive radicals that reduce As（III） and convert it to solid forms.

关键词： Arsenite Sodium dithionite Reductive precipitation and Ultraviolet light

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Laser Technology and Equipment

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光机电信息 2006年第6期23卷 68-79页

作者： bill Shiner IPG Photonics Corporation

Since its inception,the fiber laser has attracted Since its inception, the fiber laser has attracted users because of its large gain and the ability to produce continuous *** modern fiber laser is pumped by high-power multimode single-emitter diodes or diode bars, typically through a cladding surrounding a single-mode *** single-mode core is typically 5～12 μm in diameter. The double-clad fiber consists of an inner singlemode core doped with the appropriate rare-earth ions such as neodymium, erbium, ytterbium and *** cladding is made of undoped glass that has a lower index of refraction. The pump light is injected into the cladding and then propagates along the structure, passing through the active core and producing a population inversion.

关键词： YAG Co mode Laser Technology and Equipment high DPSS nm www

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Putting some 'Zing' into Beijing

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中国周刊 2004年第7期 10-11页

作者： bill Symington

It’s one o’clock on a clear night, one of those rare occasions in Beijing when the weather is neither too hot nor too cold. I decide to get some exercise and walk home after a nice relaxing dinner with friends. As I’m strolling past the south gate of Ritan Park, I notice the lights are still on at a place I haven’t seen before. ’Zing’ it reads. I try the door, thinking that one more for the road won’t hurt. Cautiously making my way past a row of tables flanking a row of gargoyles to my right, I am greeted by a charming

关键词： into Beijing Putting some Zing

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