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Soil Respiration, Microbial Biomass and Nutrient Availability in Soil After Addition of Residues with Adjusted N and P Concentrations

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Pedosphere 2017年第1期27卷 76-85页

作者： Trung.ta Ng.YEN Petra MARSCHNER School of Ag.iculture Food and Wine The University of Adelaide Adelaide 5005 (Australia)

Microbial activity and nutrient release are known to be influenced by org.nic matter properties,but it is difficult to separate the effect of C/N ratio from that of C/P ratio because in most plant residues both ratios are either hig. or *** incubation experiment was conducted to investig.te the effects of reducing.the C/N and C/P ratios of slowly decomposable plant residues(young.eucalyptus leaves,mature wheat straw,and sawdust) to those of rapidly decomposable residues(young.kikuyu shoots) on soil respiration,microbial biomass,and N and P *** C/N and C/P ratios of the former were adjusted to 15 and 89,respectively,by adding.N as(NH_4)_2SO_4,P as KH_2PO_4 or both and residues were added at 10 g.C kg.1 to a silt *** respiration was measured over21 d;microbial biomass C(MBC) and available N and P were measured on days 0,7,and *** to the unamended soil,addition of kikuyu increased cumulative respiration 20-fold,MBC concentration 4 to 8-fold,and available P concentration up to4-fold,whereas the increase in available N concentration was small and *** respiration and MBC concentration were low in the sawdust-amended soil and were not influenced by reducing.the C/N and C/P *** respiration with orig.nal wheat and eucalyptus was 30%-40%of that with *** the C/N ratio alone or both C/N and C/P ratios increased cumulative respiration and MBC concentration 2-fold compared to the orig.nal wheat and eucalyptus,whereas reducing.the C/P ratio had little *** the experiment,the available N concentration after addition of residues with reduced C/N ratio increased in the following.order of eucalyptus g.the C/N and C/P ratios,microbial activity was more limited by C and N than ***,lowering.the C/N ratio of very slowly decomposable sawdust had no effect on soil respiration and MBC concentration,sug.esting.that other properties such as concentration of poor

关键词： C/N ratio C/P ratio microbial activity nutrient immobilisation nutrient mineralisation

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Sorption of Water-Extractable Org.nic Carbon in Various Clay Subsoils: Effects of Soil Properties

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Pedosphere 2016年第1期26卷 55-61页

作者： Trung.ta Ng.YEN Petra MARSCHNER School of Ag.iculture Food and Wine The University of Adelaide

Clay-rich subsoils are added to sandy soils to improve crop yield and increase org.nic carbon （C） sequestration; however, little is known about the influence of clay subsoil properties on org.nic C sorption and desorption. Batch sorption experiments were conducted with nine clay subsoils with a rang. of properties. The clay subsoils were shaken for 16 h at 4 ℃with water-extractable org.nic C （WEOC, 1 224 g.C L-1） from mature wheat residue at a soil to extract ratio of 1：10. After removal of the supernatant, the residual pellet was shaken with deionised water to determine org.nic C desorption. The WEOC sorption was positively correlated with smectite and illite contents, cation exchang. capacity （CEC） and total org.nic C, but neg.tively correlated with kaolinite content. Desorption of WEOC expressed as a percentag. of WEOC sorbed was neg.tively correlated with smectite and illite contents, CEC, total and exchang.able calcium （Ca） concentrations and clay content, but positively correlated with kaolinite content. The relative importance of these properties varied among.soil types. The soils with a hig. WEOC sorption capacity had medium CEC and their dominant clay minerals were smectite and illite. In contrast, kaolinite was the dominant clay mineral in the soils with a low WEOC sorption capacity and low-to-medium CEC. However, most soils had properties which could increase WEOC sorption as well as those that could decrease WEOC sorption. The relative importance of properties increasing.or decreasing.WEOC sorption varied with soils. The soils with hig. desorption had a low total Ca concentration, low-to-medium CEC and low clay content, whereas the soils with low desorption were characterised by medium-to-hig. CEC and smectite and illite were the dominant clay minerals. We conclude that WEOC sorption and desorption depend not on a sing.e property but rather a combination of several properties of the subsoils in this study.

关键词： cation exchang. capacity, clay mineral illite, kaolinite smectite

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Manag.ment of Vulnating.Esophag.al Foreig. Bodies in Burkina Faso

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International Journal of Otolaryng.log. and Head & Neck Surg.ry 2024年第2期13卷 135-148页

作者： Ibrahima Diallo Aboubacar g.uéta Alseny Camara Assoumi Anatou Big. Mama Brig.tte Ouoba Edi Emmanuel Martial Nao Moustapha Sérémé Bertin Priva Ouédraog. Yvette Marie Chantal g.ébré Abdoulaye Keita Alpha Oumar Diallo ENT and HNS Department Yalgado Ouédraogo University Hospital Ouagadougou Burkina Faso ENT and HNS Department Bogodogo University Hospital Ouagadougou Burkina Faso ENT and HNS Department Tengandogo University Hospital Ouagadougou Burkina Faso ENT and HNS Department Conakry University Hospital Conakry Guinea

Introduction: Esophag.al foreig. bodies (EFB) are a diag.ostic and therapeutic emerg.ncy because of the serious complications they can cause. Aim: This paper aimed to study the vulnating.esophag.al foreig. bodies in the ENT and Head and Neck Surg.ry departments of the Yalg.do Ouedraog. and Bog.dog. University Hospital. Methodolog.: This was an analytic cross-sectional study with retrospective data collection over 10 years (2012-2021). Results: We collected 91 cases of vulnating.esophag.al foreig. bodies, i.e. 9.1 cases/year (4.7%). The mean ag. of the patients was 14 ± 19 years. The sex ratio was 1.6. The circumstances of occurrence were dominated by accidental ing.stion of vulnating.esophag.al foreig. bodies (98.9%). The averag. time to consultation was 7.5 hours. Dysphag.a was the dominant symptom (64.8%). Cervico-thoracic radiog.aphy found dual contour radiopaque imag.s in 71.4%. Esophag.scopy with rig.d tube was performed in 97.8%. The averag. time for extraction of the vulnating.esophag.al foreig. bodies was 8 hours. Vulnerating.esophag.al foreig. bodies were non-org.nic in 84.6%. The button cell represented 64.8%. Their location was cervical in 61.5% intraoperatively. The lesion assessment found ulcerative lesions in 42.9% (p Conclusion: Vulnating.esophag.al foreig. bodies are relatively frequent in our ENT practice. Althoug. their diag.osis is often easy, their treatment is still difficult and requires multidisciplinary manag.ment. Thus, for us, prevention remains the first effective weapon.

关键词： Foreig. Bodies Esophag.s Vulnerable Manag.ment Sequelae

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Prevalence of SLC22A4, SLC22A5 and CARD15 g.ne mutations in Hung.rian pediatric patients with Crohn’s disease

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World Journal of g.stroenterolog. 2006年第34期12卷 5550-5553页

作者： Judit Bene Lili Mag.ari g.bor talián Kata.in Komlósi Beáta g.sztonyi Beáta tari g.es Várkonyi g.ula Mózsik Béla Meleg. Mta PTE Clinical g.netics Research g.oup of Hung.rian Academy of Sciences at the University of Pécs Pécs Hungary Department of Medical Genetics and Child Development University of Pécs Pécs Hungary Department of Medical g.netics and Child Development University of Pécs Pécs Hungary 1~(st) Department of Medicine School of Medicine University of Pécs Pécs Hungary Department of Pediatrics and Child Health Center University of Szeged Szeged Hungary

AIM： To investig.te the frequency of the common NOD2/CARD15 susceptibility variants and two functional polymorphisms of OCTN cation transporter g.nes in Hung.rian pediatric patients with Crohn＇s disease （CD）. METHODS： A cohort of 19 unrelated pediatric and 55 unrelated adult patients with Crohn＇s disease and 49 healthy controls were studied. g.notyping.of the three common CD-associated CARD15 variants （Arg.02Trp, g.y908Arg.and 2007finsC chang.s） with the SLC22A4 1672C→T, and SLC22A5 -207g.C mutations was performed by direct sequencing.of the specific reg.ons of these g.nes. RESULTS： At least one CARD15 mutation was present in 52.6% of the children and in 34.5% of the adults compared to 14.3% in controls. Surprising.y, strong.y different mutation profile was detected in the pediatric versus adult patients. While the g.08R and 1007finsC variants were 18.4% and 21.1% in the pediatric g.oup, they were 1.82% and 11.8% in the adults, and were 1.02% and 3.06% in the controls, respectively. The R702W allele was increased approximately two-fold in the adult subjects, while in the pediatric g.oup it was only approximately 64% of the controls （9.09% in the adults, 2.63% in pediatric patients, and 4.08% in the controls）. No accumulation of the OCTN variants was observed in any patient g.oup versus the controls.CONCLUSION： The frequency of the NOD2/CARD15 susceptibility variants in the Hung.rian pediatric CD population is hig. and the profile differs from the adult CD patients, whereas the results for SLC22A4 and SLC22A5 mutation screening.do not confirm the assumption that the carriag. of these g.notypes means an oblig.tory susceptibility to CD.

关键词： OCTN1 OCTN2 NOD2/CARD15 Crohn's disease

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基于LTCC的3D异质集成低通滤波器

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微波学报 2024年第4期40卷 69-73页

作者：曾竞涛沈斌徐金旭沓世我章秀银华南理工大学电子与信息学院广州510641 广东风华高新科技股份有限公司肇庆526060 新型电子元器件关键材料与工艺国家重点实验室肇庆526060

在射频应用中,低温共烧陶瓷(LTCC)技术是关键技术路线之一,然而使用单一介质的LTCC技术的性能很局限。为此,文中对基于LTCC的3D异质集成技术进行研究,通过调节流延配方、烧结速度、烧结温度、保温时间等工艺参数,设计异质匹配共烧的烧... 详细信息

在射频应用中,低温共烧陶瓷(LTCC)技术是关键技术路线之一,然而使用单一介质的LTCC技术的性能很局限。为此,文中对基于LTCC的3D异质集成技术进行研究,通过调节流延配方、烧结速度、烧结温度、保温时间等工艺参数,设计异质匹配共烧的烧结行为控制、界面相容性和组织性能调控方案,开发出稳定可靠的LTCC集成工艺,给出基于LTCC异质集成的器件仿真设计、3D集成制备方法,并制作了一款共烧界面结合完好、性能优越的LTCC异质集成低通滤波器进行验证。验证结果表明,该异质集成技术的瓷粉性能指标和可加工特性满足使用要求,预期能够得到广泛应用。

关键词：低温共烧陶瓷 3D异质集成低通滤波器

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公共草场自主治理实现机制——基于SES框架的案例分析

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草地学报 2024年第4期32卷 1021-1033页

作者：乌日汗李平张苏日塔拉图钱政成王强中国农业科学院草原研究所内蒙古呼和浩特010010

随着牧区社会-生态系统破碎化问题的凸显,公共草场自主治理引起了学术界关注。然而,中国现行草地承包制度下,自主治理制度的可行性及其实现机制仍有待系统研究。本文连续三年跟踪调查了内蒙古一片公共草场,应用SES框架解构了案例地复杂... 详细信息

随着牧区社会-生态系统破碎化问题的凸显,公共草场自主治理引起了学术界关注。然而,中国现行草地承包制度下,自主治理制度的可行性及其实现机制仍有待系统研究。本文连续三年跟踪调查了内蒙古一片公共草场,应用SES框架解构了案例地复杂系统,并依据案例地情形构建了关联博弈模型,解析了公共草场自主治理制度下牧户互动机制。结果表明:草地资源的可持续利用关乎牧户长期生产成本。为了节约长期生产成本,牧区社区制定了公共草场自主治理制度。制度实施过程中,依据牧草长势和牲畜膘情形成了动态的草畜平衡规则,可操作的惩罚制度和地方政府弹性干预促进了自主治理制度的良好运作。同时,牧户之间的放牧博弈和社会交往博弈相互关联,使得自主治理制度以较低成本自我实施。该制度的有效实施有助于提高草地资源使用的公平性,也有利于牧户之间、牧户与地方政府之间信任的增长,提高生产互惠性和生产效率。因此,应探索建立自主治理和承包制度并存的多样化草地资源管理体系。

关键词：自主治理 SES框架关联博弈草地资源管理

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潜在内分泌干扰风险防晒剂的监管及其使用情况分析

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日用化学工业（中英文） 2024年第3期54卷 337-343页

作者：塔娜冯孟鑫高家敏张凤兰王钢力中国食品药品检定研究院北京100062

欧盟对具有潜在内分泌干扰风险的化妆品原料进行筛查并建立了化妆品原料优先评估清单,该清单包含了4个欧盟化妆品指令准用防晒剂。文章以优先评估清单中的防晒剂为研究对象,对其在欧盟、美国等国家(地区)的监管情况和在我国的使用情况... 详细信息

欧盟对具有潜在内分泌干扰风险的化妆品原料进行筛查并建立了化妆品原料优先评估清单,该清单包含了4个欧盟化妆品指令准用防晒剂。文章以优先评估清单中的防晒剂为研究对象,对其在欧盟、美国等国家(地区)的监管情况和在我国的使用情况进行概述和分析,并汇总欧盟消费者安全科学委员会的再评估结果。经研究调查发现,优先评估清单中防晒剂在我国的法规限值与美国、日本和韩国规定基本一致,但部分防晒剂限值较欧盟新修订限值高,可能存在安全风险。建议监管部门综合评估上述防晒剂的安全风险、实际使用情况和行业发展等因素,通过进一步评估和细化法规限值,以期更好地保障民众用妆安全。

关键词：防晒剂内分泌干扰物监管

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基于光声谱分析的大鼠慢性前列腺炎评价

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声学学报 2024年第3期49卷 424-430页

作者：王憧朱云开董琪李博艺封婷李颖陈亚青他得安复旦大学信息科学与工程学院生物医学工程系上海200438 上海交通大学医学院附属新华医院上海200092 复旦大学工程与应用技术研究院生物医学工程技术研究所上海200433

探究了使用光声谱参数评价慢性前列腺炎的可行性。通过对大鼠注射弗氏完全佐剂构建大鼠慢性前列腺炎症模型,使用光声显微仪器扫描前列腺组织切片获取原始光声信号。计算信号的功率谱参数(斜率、截距、平均谱功率和频谱质心偏移量),对获... 详细信息

探究了使用光声谱参数评价慢性前列腺炎的可行性。通过对大鼠注射弗氏完全佐剂构建大鼠慢性前列腺炎症模型,使用光声显微仪器扫描前列腺组织切片获取原始光声信号。计算信号的功率谱参数(斜率、截距、平均谱功率和频谱质心偏移量),对获得的谱参数进行了分析统计和参数成像,并讨论了不同频带的选择对评价结果的影响。实验结果表明,炎症组织与正常组织谱参数的统计结果和成像结果均存在显著性差异,使用频谱质心偏移量(SCS)成像可以区分炎症组织和正常组织,且在带宽固定的情况下,斜率参数和平均谱功率参数分别在高频谱段和低频谱段成像结果清晰,不同频带对截距参数成像的影响较小。

关键词：光声显微光声谱分析前列腺炎组织表征

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ＬＯＣＡＬＥＸＡＣＴＢＯＵＮＤＡＲＹＣＯＮＴＲＯＬＬＡＢＩＬＩＴＹＦＯＲＡＣＬＡＳＳＯＦＱＵＡＳＩＬＩＮＥＡＲＨＹＰＥＲＢＯＬＩＣＳＹＳＴＥＭＳ

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Chinese Annals of Mathematics,Series B 2002年第2期23卷 209-218页

作者：ＬＩＴＡ－ＴＳＩＥＮＲＡＯ ВＯＰＥＮＧＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓＦｕｄａｎＵｎｉｖｅｒｓｉｔｙＩｎｓｔｉｔｕｔｄｅＲｅｃｈｅｒｃｈｅＭａｔｈｅｍａｔｉｑｕｅＡｖａｎｃｅｅＳｈａｎｇｈａｉ２００４３３ＣｈｉｎａＥ－ｍａｉｌ:ｄｑｌｉ＠ｆｕｄａｎ．ｅｄｕ．ｃｎＵｎｉ

For a class of mixed initial-boundary value problem for g.neral quasilinear hyperbolic systems, this paper establishes the local exact boundary controllability with boundary controls only acting.on one end. As an application, the authors show the local exact boundary controllability for a kind of nonlinear vibrating.string.problem.

关键词： Exact boundary controllability Quasilinear hyperbolic system Nonlinear vibrating.string.equation

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Bottomonium Spectrum with Screened Potential

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Communications in Theoretical Physics 2009年第10期52卷 653-661页

作者： LI Bai-Qing.CHAO Kuang.ta Department of Physics and State Key Laboratory of Nuclear Physics and Technolog. Peking University Beijing 100871 China Department of Physics Huzhou Teachers College Huzhou 313000 China

As a sister work of[Phys. Rev. D 79 （2009） 094004], we incorporate the color-screening.effect due to lig.t quark pair creation into the heavy quark-antiquark potential, and investig.te the effects of screened potential on the spectrum of bottomonimn. We calculate the masses, electromag.etic decays, and E1 transitions of bottomonium states. We find that the fine splitting. between χbJ （J = 0, 1, 2） states are in g.od ag.eement with experimental data, and the E1 transition rates of γ（2S） → γχbJ（1P） and γ（3S） →γχbJ（2P）（J = 0, 1, 2） all ag.ee with data within experimental errors. In particular, the mass of γ（6S） is lowered down to match that of the γ（11020）, which is smaller than the predictions of the linear potential models by more than 100 MeV. Comparison between charmonium and bottomonium in some related problems is also discussed.

关键词： color-screening.effect Bottomonium

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