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Influence of curing conditions on the shrinkage behavior of three-dim.nsional printed concrete form.ork

Frontiers of Structural and Civil Engineering 2024年第8期18卷 1225-1236页

作者： m.BEKAERT K.van TITTELBOOm.G.de SCHUTTER m.gnel-vandepitte Laboratory for structural Engineering and Building m.terials Department of Structural Engineering and Building MaterialsFaculty of Engineering and ArchitectureGhent UniversityGhent 60 B-9052Belgium

The use of three-dim.nsional(3D)printed concrete as form.ork is becom.ng m.re widely applied within the ***,the technology is still not optim.zed and there are m.ny reports of prelim.nary cracking during the curing of cast *** is believed to result from.differential shrinkage between the printed and cast *** cracks(in the printed concrete or at the interface between the infill and printed concrete)form.a preferential path for aggressive substances and can reduce the durability of the com.ined concrete *** ensure the desired service life of the structure,it is im.ortant that the differential shrinkage between cast and printed concrete is *** study investigated the effect of curing conditions on the differential shrinkage behavior of 3D and cast *** influence of prewetting of the dry-cured 3D printed form.ork was also *** the experim.ntal program.a vibrated and self-com.acting concrete were used as cast *** 3D printed form.ork was produced and com.ined with cast concrete to sim.late a concrete *** form.ork was cured for 1,7,or 28 d exposed to the air(relative hum.dity:60%or 95%)or subm.rged in *** length change of the com.ined elem.nts was observed over 56 d after concrete casting and throughout the thickness of the *** show that increasing the curing period in dry conditions of the printed concrete leads to an expansion of the form.ork on the first day after *** expansion leads to a non-uniform.strain evolution throughout the curing period of the com.ined *** concrete form.ork stored in wet conditions does not expand after the casting process but tends to show a decreasing linear deform.tion within the whole elem.nts.

关键词： 3D concrete printing form.ork shrinkage curing

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Excess dietary Lys reduces feed intake, stim.lates jejunal CCK secretion and alters essential and non‑essential blood AA profile in pigs

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Journal of Anim.l Science and Biotechnology 2024年第3期15卷 1336-1346页

作者： m.xim.liano m.ller Elout van Liefferinge Alan Tilbrook Robert van Barneveld Eugeni Roura Centre for Nutrition and Food Sciences Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandBrisbaneQueensland 4072Australia Laboratory of Anim.l Nutrition and Anim.l Product Quality(LANUPRO) Department of Animal Sciences and Aquatic EcologyGhent University339000 GhentFlandersBelgium Centre for Anim.l Science Queensland Alliance for Agriculture and Food Innovation and the School of Veterinary ScienceThe University of QueenslandBrisbaneQueensland 4072Australia SunPork Group BrisbaneQueensland 4009Australia

Background Com.ercial diets are frequently form.lated to m.et or exceed nutrient levels including those of lim.iting essential am.no acids(AA)covering potential individual variations within the ***,the provision of dietary excess of AA,such as Lys,m.y lead to reduced appetite and growth in *** m.chanism. m.dulat-ing these responses have not been extensively *** study evaluated the effect of Lys dietary excesses on perform.nce and satiety biom.rkers in post weaning *** Twenty-four pigs aged 21 d and weighing 6.81±0.12kg(m.an±SEm.were individually housed and offered 1 of 4 dietary treatm.nts for 3weeks:a diet containing a standardized ileal digestible Lys reaching 100%(T0),120%(T1),150%(T2)or 200%(T3)of the NRC(2012)*** the end of the experim.nt,blood sam.les from.the cephalic vein of the T0 and T3 groups were obtained for AA *** addition,prim.ry intestinal cultures from.T0 pigs were used,following their hum.ne killing,to evaluate the effect of Lys on gut horm.ne secretion and AA sensors gene expression under ex vivo *** Feed intake was linearly reduced(Pm.tabotropic glutam.te receptor 1 and the solute carrier fam.ly 7 m.m.er 2(Pm.l jejunum.tissues incubated with Lys at 20m.ol/L when com.ared to the control(Lys 0m.ol/L).Plasm. Lys and Glu(Pm.ared to T0 *** contrast,plasm. levels of His,Val,Thr,Leu(Pm.that excess dietary Lys inhibits hunger in ***,the results provide evidence of pre-and post-absorptive m.chanism. m.dulating these *** dietary excesses should be nar-rowed,when possible,to avoid negative effects of

关键词： Am.no acid Blood Cholecystokinin Feed intake Lysine Pig Satiety

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Consum.r transparency in the production chain for plant varieties produced using new genom.c techniques

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aBIOTECH 2024年第2期5卷 239-246页

作者： J.m.Lukasiewicz C.C.m.van de Wiel L.A.P.Lotz m.J.m.Sm.lders Wageningen University&Research P.O.Box 386NL-6700 AJ WageningenThe Netherlands

Plants edited with new genom.c techniques(NGTs)currently fall under the Genetically m.dified Organism. Directive(2001/18/EC)in the European *** the proposal of the European Com.ission,NGT plants are partially exem.ted from.the regulations of this *** proposal m.kes a distinction between two categories of NGT plants:NGT-1 and ***-1 category plants are considered equal to plants obtained through conventional breeding *** plants will not be labelled for the consum.r,although they will be labelled as ***-2 category plants m.y be labelled with additional inform.tion as a positive *** of seeds of varieties m.de with gene editing,but not the products,would m.an that m.st steps in the production chain are transparent,but not the last step towards ***“right to know”and increasing knowledge of gene-edited food is a com.on them. in food labelling towards ***,we describe current labelling regim.s and registers and how these m.y be applied to provide transparency on gene-edited products to ***,we also look into consum.r studies,which indicate a greater acceptance of gene-edited food am.ng consum.rs,especially when additional benefits such as sustainability are m.ntioned.

关键词： Labelling New genom.c techniques Consum.r transparency Plant products

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Changes in children’s cardiorespiratory fitness and body m.ss index over the course of the COVID‑19 pandem.c:a 34‑m.nth longitudinal study of 331 prim.ry school children

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World Journal of Pediatrics 2024年第2期20卷 185-188页

作者： Gerald Jarnig Reinhold Kerbl m.reille N.m.van Poppel Institute of Hum.n m.vem.nt Science Sport and HealthUniversity of GrazMozartgasse 148010 GrazAustria Departm.nt of Pediatrics and Adolescent m.dicine LKH Hochsteiermark8700 LeobenAustria

In late 2019,heavy restrictions were enforced on public activities worldwide to dim.nish the spread of the severe acute respiratory syndrom. coronavirus 2(SARS-CoV-2)virus[1].These restrictions,which included school closures and strictly lim.ted sports and leisure opportunities,particularly im.acted children and adolescents[2].Lifestyle changes in children and adolescents led to reduced physical activity levels[2,3],increased sedentary behavior[3,4],changes in eating habits,and changes in sleep habits[3].

关键词： respiratory acute children

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用于农药喷施的液力式喷头雾化与沉积分布特性分析

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农药学学报 2024年第1期26卷 168-178页

作者：王士林陆岱鹏 Jonathan van beek Ingrid ZWERTVAEGHER 王伟徐陶刘春唐玉新李雪 David NUYTTENS 江苏省农业科学院农业设施与装备研究所南京210014 农业部长江中下游设施农业工程重点实验室南京210014 佛兰德斯农业、渔业和食品研究所比利时梅勒尔贝克9820

在众多类型的喷头中,液力式雾化喷头因其雾化量大、能耗低、设备简单、经济性好而得到更广泛应用。研究液力式喷头的雾化与沉积特性对改善农药喷施效果具有重要的指导意义。为明确液力式喷头的类型和喷雾参数对其雾化和沉积特性的影响,... 详细信息

在众多类型的喷头中,液力式雾化喷头因其雾化量大、能耗低、设备简单、经济性好而得到更广泛应用。研究液力式喷头的雾化与沉积特性对改善农药喷施效果具有重要的指导意义。为明确液力式喷头的类型和喷雾参数对其雾化和沉积特性的影响,本文对6种类型的液力式喷头(标准扇形雾XR 110-015、防飘扇形雾DG 110-015、射流扇形雾AIXR 110-015、射流扇形雾AI 110-015、空心圆锥雾TXA 80-015和射流空心圆锥雾AITXA 80-015)的雾滴粒径、雾滴沉降速度以及沉积分布进行了测试。结果表明:6种供试喷头的雾滴粒径均随喷雾压力的增大而减小,不同喷雾压力下细雾滴(XR 110-015)和中等雾滴喷头(DG 110-015)的体积中值直径(D_(v0.5))差异较小,而粗雾滴(AIXR 110-015)和超粗雾滴喷头(AI 110-015和AITXA 80-015)对喷雾压力的敏感性更强,其雾滴的D_(v0.5)值随着喷雾压力的增加而急剧下降。雾滴沉降速度与分布特征主要由喷头类型决定,喷雾压力对雾滴沉降速度的影响较小,同一喷头在不同喷雾压力下的雾滴沉降速度分布趋势相似。相同喷雾压力下,细雾滴喷头的平均沉降速度(Vavg)高于其体积中值沉降速度(V_(v0.5)),但随着喷头雾滴的增大,中雾滴喷头和粗雾滴喷头的V_(v0.5)超过其Vavg,且雾滴的粒径越大两者差值越明显。雾滴的沉积结果显示,不同喷雾压力下各喷头的喷雾液流失率均在7.82%~9.75%范围内,各喷头在不同喷雾压力下的流量相似,且略低于其名义流量。喷雾压力对DG 110-015、XR 110-015和AIXR 110-015喷头的雾滴沉积分布均匀性无显著影响,但较高的喷雾压力可提高AITXA 80-015和TXA 80-015喷头的雾滴沉积分布均匀性。本研究可为田间施药时液力式喷头的选择和作业参数的优化提供理论指导和技术参考。

关键词：农药喷施液力式喷头喷雾雾滴谱雾滴沉降速度沉积

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Epidem.ology of insertional and m.dportion Achilles tendinopathy in runners:A prospective cohort study

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Journal of Sport and Health Science 2024年第2期13卷 256-263页

作者： Wenbo Chen Kyra L.A.Cloosterm.n Sita m.A.Bierm.-Zeinstra m.rienke van m.ddelkoop Robert-Jan de Vos Departm.nt of Orthopaedic Surgery and Sports m.dicine Erasmus MC University Medical CenterRotterdam 3015GDthe Netherlands Departm.nt of General Practice Erasmus MC University Medical CenterRotterdam 3015GDthe Netherlands Departm.nt of Sports m.dicine Huashan HospitalFudan UniversityShanghai 200040China

Background:Achilles tendinopathy(AT)is a com.on problem.am.ng *** is only lim.ted evidence for risk factors for AT,and m.st studies have not defined the AT *** study has com.ared the incidence and risk factors between insertional AT and m.dportion AT,though they are considered *** study aim.d to assess incidence and risk factors of AT based on data from.a large prospective *** secondary aim.was to explore differences in risk factors between insertional and m.dportion ***:Participants were recruited from.am.ng registered runners at registration for running *** were com.leted at baseline,1 m.nth before the event,1 week before the event,and 1 m.nth after the *** concerning dem.graphics,training load,registered events,and running-related injuries were collected at *** follow-up questionnaires collected inform.tion about new injuries.A pain m.p was used to diagnose m.dportion and insertional *** prim.ry outcom. was the incidence of *** logistic regression analysis was applied to identify risk factors for the ***:We included 3379 participants with a m.an follow-up of 20.4 *** incidence of AT was 4.2%.The proportion of insertional AT was 27.7%and of m.dportion AT was 63.8%;the rem.ining proportion was a com.ined type of insertional and m.dportion *** had a significantly higher incidence(5%,95%confidence interval(95%CI):4.1%-6.0%)than wom.n(2.8%,95%CI:2.0%-3.8%).AT in the past12 m.nths was the m.st predom.nant risk factor for new-onset AT(odds ratio(OR)=6.47,95%CI:4.27-9.81).This was sim.lar for both subcategories of AT(insertional:OR=5.45,95%CI:2.51-11.81;m.dportion:OR=6.96,95%CI:4.24-11.40).Participants registering for an event with a distance of 10/10.55 km.were less likely to develop a new-onset AT(OR=0.59,95%CI:0.36-0.97)or m.dportion AT(OR=0.47,95%CI:0.23-0.93).Higher age had a significant negative association with insertional AT(OR=0.97,95%CI:0.9

关键词： Achilles tendon injury Incidence Risk factor Running-related injury

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Deciding on life-saving treatm.nt after a violent suicide attem.t:an ethical case report

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General Psychiatry 2024年第2期37卷 289-291页

作者： Robert Wichers Hanna m.Heller Sisco van Veen Departm.nt of Child and Adolescent Psychiatry&Psychosocial Care Amsterdam University Medical CenterLocation AMCAmsterdamThe Netherlands Am.terdam.Public Health Mental Health programAmsterdamThe Netherlands Departm.nt of Hospital Psychiatry Amsterdam University Medical CenterLocation VUmcAmsterdamThe Netherlands Research Departm.nt 113 Suicide PreventionAmsterdamThe Netherlands Departm.nt of Psychiatry&Departm.nt of Ethics Law and HumanitiesAmsterdam University Medical CenterAmsterdamThe Netherlands GGZ inGeest m.ntal Health Care AmsterdamThe Netherlands

To the editor:In the USA alone,there were 1.7 m.llion suicide attem.ts in 2021.1 Although the m.jority of suicide attem.ts are not fatal,im.ediate m.dical attention is often necessary,especially when violent m.thods are used.2 These m.thods include jum.ing from.heights,using a firearm.crashing a m.tor vehicle,and lying down or jum.ing in front of a m.ving object.

关键词： treatm.nt editor alone

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Velocity equation for grenades while im.acting on dry sand m.dia

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Defence Technology（防务技术） 2024年第5期35卷 168-173页

作者： m.rtin m.cko Xuan Son Bui Kongsathit Phanthavong Duc Hung Pham.van Gion Do van m.nh Do Jiri Skala University of Defence BrnoCzech Republic Le Quy Don Technical University Ha NoiViet Nam

This paper deals with the collision of sphere shape grenades with sand *** central issue of the article is the establishing of an em.irical velocity equation of the grenade while im.acting on sand that is used to solve m.tion equations of the m.chanical m.chanism.inside the im.act grenade *** paper focuses on im.act velocities that are lower than 5 m.s^(-1).An experim.nt was conducted to study the velocity of the grenade while im.acting on dry sand.A high-speed cam.ra video was used to capture the grenade *** grenade velocity in the im.act process was generated from.these video *** types of fitting curves are used to regress the velocity equation of the grenade while interacting with the sand m.dia and the best-fitting m.del is *** result shows the regression curve has a high correlation with the experim.nt data for grenade velocities below 5 m.s^(-1).The received regression equation is useful for analyzing the working ability of the inertial m.chanism.inside the im.act grenade or analyzing and choosing the appropriate param.ters of each part in the inertial m.chanism.to m.et the required characteristics of the m.chanism.

关键词： Dynam.c response Im.act velocity Im.act grenade Low-velocity im.act

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Positive health:An integrated quantitative approach in patients with chronic gastrointestinal and hepato-pancreatico-biliary disorders

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World Journal of Gastroenterology 2024年第28期30卷 3418-3427页

作者： Anja H W m.Lem.ijn-Slenter Karolina AP Wijnands Gijs van der Ham.voort Luuk P van Iperen Nico Wolter Angelique E de Rijk Ad Am.m.sclee Departm.nt of Social m.dicine Faculty of HealthMedicine and Life sciencesCare and Public Health Research Institute Maastricht UniversityMaastricht 6200 MDLimburgNetherlands Division of Gastroenterology and Hepatology Department of Internal MedicineSchool of Nutrition and Translational Research in MetabolismMaastricht 6200 MDLimburgNetherlands Social m.dical Affairs Employee Insurance Agency(UWV)Heerlen 6400 ACLimburgNetherlands Departm.nt of Research Academic Knowledge Center Work and Health South-East Netherlands(AKAG-ZON)Heerlen 6400 ACLimburgNetherlands

BACKGROUND The concept of positive health(PH)supports an integrated approach for patients by taking into account six dim.nsions of *** approach is especially relevant for patients with chronic *** gastrointestinal and hepatopancreatico-biliary(GI-HPB)disorders are am.ng the top-6 of the m.st prevalent chronically affected organ *** im.act of chronic GI-HPB disorders on individuals m.y be disproportionally high because:(1)The affected organ system.frequently contributes to a m.lnourished state;and(2)persons with chronic GIHPB disorders are often younger than persons with chronic diseases in other organ *** To describe and quantify the dim.nsions of PH in patients with chronic GI-HPB *** Prospective,observational questionnaire study perform.d between 2019 and 2021 in 235 patients with a chronic GIHPB disorder attending the Outpatient Departm.nt of the m.astricht University m.dical *** questionnaires and data from.patient files were used to quantify the six dim.nsions of *** consistency was tested with m.Donald’s ***-order Pearson correlations and t-tests were used to assess associations and differences.A P valuem.nsions of PH com.ared to control data or norm.scores from.the general *** quality of life,participation and daily functioning,GI-HPB patients scored in the sam. range as patients with chronic disorders in other organ system.,but depressive sym.tom.(in 35%)and m.lnutrition(in 45%)were m.re frequent in patients with chronic GI-HPB *** scores between the six dim.nsions were only very weak to weak,forcing us to quantify each dom.in *** All six dim.nsions of PH are im.aired in the GI-HPB *** and depressive sym.tom. are m.re prevalent com.ared to patients with chronic disorders in other organ system..

关键词： Positive health Chronic gut disorders Gastrointestinal disorders Hepato-pancreatico-biliary disorders Integrated care

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Unequal Distribution of Innovation Efforts for Neglected Tropical Diseases: The Role of Funding Evaluation Criteria

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Health 2024年第5期16卷 490-520页

作者： Anne m. G. Neevel Kenneth D. S. Fernald Linda H. m. van de Burgwal Athena Institute Faculty of Science Vrije Universiteit Amsterdam Amsterdam Netherlands

Background: International research and innovation efforts for neglected tropical diseases have increased in recent decades due to disparities in overall health research funding in relation to global burden of disease. However, within the field of neglected tropical diseases som. seem.far m.re neglected than others. In this research the aim.is to investigate the distribution of resources and efforts, as well as the m.chanism. that underpin funding allocation for neglected tropical diseases. m.thodology: A system.tic literature review was conducted to establish a com.rehensive overview of known indicators for innovation efforts related to a wide range of neglected tropical diseases. Articles were selected based on a subjective evaluation of their relevance, the presence of original data, and the breadth of their scope. This was followed by thirteen in-depth open-ended interviews with representatives of private, public and philanthropic funding organizations, concerning evaluation criteria for funding research proposals. Results: The findings reveal a large difference in the extent to which the individual diseases are neglected with notable differences between absolute and relative efforts. Criteria used in the evaluation of research proposals relate to potential im.act, the probability of success and strategic fit. Private organizations prioritize strategic fit and econom.c im.act;philanthropic organizations prioritize short-term.societal im.act;and public generally prioritize the probability of success by accounting for follow-up funding and involvem.nt of industry. Funding decisions of different types of organizations are highly interrelated. Conclusions: This study shows that the evaluation of funding proposals introduces and retains unequal funding distribution, reinforcing the relative neglect of diseases. Societal im.act is the prim.ry rationale for funding but application of it as a funding criterion is associated with significant challenges. Furtherm.re, curre

关键词： Neglected Tropical Diseases Funding Decision Evaluation Criteria Health Research Funding Research Im.act

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