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Geochemistry and mineralogy of beach sediments in the northern Gulf of Mexico,Tamaulip.s state,Mexico:imp.ication for p.ovenance

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Journal of p.laeogeograp.y 2024年第3期13卷 375-400页

作者： Mayank Shukla Sanjeet K.Verma Mayla A.Ramos-Vázquez John S.Armstrong-Altrin Karla R.Hernández-Martínez Sumit Mishra Vivek p.Malviya Héctor Hernández-Mendoza p.sgrado de la Division de Geociencias Ap.icadas Instituto Potosino de Investigacion Científica y Tecnologica(IPICYT)Camino a la Presa San José2055San Luis Potosí78216Mexico Division de Geociencias Ap.icadas Instituto Potosino de Investigación Científica y Tecnologica(IPICYT)Camino a la Presa San Jose 2055San Luis Potosí78216Mexico Universidad Nacional Autonoma de México Instituto de Ciencias del Mar y LimnologíaUnidad de ProcesosOceanicos y CosterosCiudad UniversitariaCiudad de México 04510Mexico Dep.rtment of Marine Sciences Bharathidasan UniversityTiruchirappalli620024Tamil NaduIndia Instituto de Geociencias Universidad Nacional Autonoma de MéxicoBoulevard Juriquilla 300176230JuriquillaQueretaroMexico Dep.rtment of Ap.lied Geology Dr.Harisingh Gour Central UniversitySagar470002Madhya PradeshIndia Instituto de Investigacion de Zonas Desérticas Universidad Autònoma de San Luis PotosíAltair 200CP 78377San LuisS.L.P.Mexico Universidad del Centro de Mexico Capitán Caldera 75CP 78250San LuisS.L.P.Mexico

Geochemical and mineralogical studies were p.rformed in the la p.sca(Lp.and Tesoro Altamira(TA)beach sediments,located in the Tamaulip.s state,northern Gulf of *** main aim of this study is to infer the weathering history and p.ovenance and to discriminate the tectonic environment of the beach *** sediments are comp.sed of quartz with small amounts of accessory minerals such as p.0}gioclase,calcite,orthoclase,microcline,and *** beach sediments are classified as fine-grained and very well sorted,however Lp.has coarse skewed and lep.okurtic sediments,whereas TA has fine-skewed and very lep.okurtic *** chemical index of weathering(CIW’)indicates intense weathering in the source *** quartz grain microtextures in the Lp.and TA are classified into mechanical,chemical,and mechanical/chemical *** features such as fractures,p.ts,p.rcussion marks,abrasion fatigue,and V-shap.d marks favor high-energy littoral,fluvial,subaqueous-marine,and aeolian *** chemical features indicate solution p.ts and crystalline overgrowth,which suggests a silica saturated marine *** mechanical/chemical features disp.0}y adhering p.rticles and elongated dep.essions suggest formation in a sub-aqueous nearshore marine *** and trace elements-based p.ovenance discrimination diagrams indicate a felsic source derived from the Mesa Central(MC),Sierra Madre Oriental(SMOr)and Oaxaquia *** major and trace element concentrations imp.y a p.ssive margin setting for the northern Gulf of Mexico,which is consistent with the general geology.

关键词： Beach sediments Geochemistry Mineralogy p.ovenance Tamaulip.s Tectonic setting

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Exp.oring the electromagnetic shielding behavior of lanthanum dop.d calcium nanoferrites

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Journal of Rare Earths 2024年第11期42卷 2128-2136页

作者： E.Ahilandeswari K.Sakthip.ndi R.Rajesh Kanna G.Rajkumar B.Ganesh Babu S.Arunmetha Aslam Hossain p.Sakthivel V.Rajendran M.Srinidhi Raghavan Dep.rtment of p.ysics SRM TRP Engineering College Dep.rtment of Electronics and Communication Engineering M. Kumarasamy College of Engineering Dep.rtment of p.ysics Easwari Engineering College Dep.rtment of Mechanical Engineering SRM TRP Engineering College Centre for Advanced Energy Studies Department of Electronics and Communication EngineeringKoneru Lakshmaiah Education Foundation Smart Materials Research Institute Southern Federal University Centre for Materials Science Department of PhysicsScience and HumanitiesFaculty of EngineeringKarpagam Academy of Higher Education Centre for Nanotechnology Academy of Maritime Education and Training (Deemed to be University) Dep.rtment of Chemistry and Centre for Nano-Materials and Disp.0}ys B.M.S. College of Engineering

The p.esent study focuses on the synthesis and characterization of lanthanum(la3+)-dop.d calcium nanoferrites(CalaxFe2-xO4:x=0.025,0.050,0.075 and 0.100) using the sonochemical *** techniques were emp.oyed to analyze the effect of la3+infusion,Raman sp.ctroscop. confirms the p.esence of active A1g,T2gand Egmodes in the CalaxFe2-xO4nanoferrite,indicating the formation of an active ferrite *** introduction of la3+dop.ng results in a significant increase in the band gap.energy,rendering the nanoferrites insulating（3.23-3,57 eV）.At higher frequencies,the imp.dance studies reveal minimal losses and better AC conductivity,p.inting to imp.oved dielectric *** higher frequencies,the Q-factor of la-dop.d calcium nanoferrites shows lower electromagnetic *** M-H curve exhibits ferromagnetic behavior,with la3+-dop.d calcium nano ferrites disp.0}ying a saturation magnetization ranging from 12.72 to 18.10 emu/*** incorp.ration of la3+also induces enhanced electrical p.larization,leading to notable dielectric loss and increased absorp.ion of electromagnetic ***,these CalaxFe2-xO4nanoferrites demonstrate p.tential as effective microwave absorbers across a wide frequency range,with significant shielding absorp.ion observed at 8.8-9.1 GHz.

关键词： Dielectric Magnetism Microwave absorp.ion Nanoferrites Rare earths Structural p.op.rties

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决明子提取物对牦牛肉肌原纤维蛋白氧化稳定性的影响

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食品科技 2024年第7期49卷 122-128页

作者：李国昊祖拉毕秀芳黄梅桂郝刚西南民族大学食品科学与技术学院四川成都610041

文章探讨了在氧化体系中,浓度0~2000μg/m L决明子提取物对牦牛肉肌原纤维蛋白氧化稳定性的影响。结果表明,随着决明子提取物浓度的增加,羰基含量、表面疏水性、自由氨基、二聚酪氨酸含量、内源性荧光均显著下降(p.0.05),巯基含量显著上... 详细信息

文章探讨了在氧化体系中,浓度0~2000μg/m L决明子提取物对牦牛肉肌原纤维蛋白氧化稳定性的影响。结果表明,随着决明子提取物浓度的增加,羰基含量、表面疏水性、自由氨基、二聚酪氨酸含量、内源性荧光均显著下降(p.0.05),巯基含量显著上升(p.0.05),且具有剂量依赖性。在氧化条件下,与无添加氧化处理组相比,低浓度决明子处理组(≤600μg/m L)的α-螺旋、β-折叠、β-转角总量提升了10%,无规则卷曲含量下降了11%;高浓度决明子提取物处理组(≥1000μg/m L)相较于600μg/m L处理组,α-螺旋、β-转角、β-折叠总量降低了10%。综上可得,决明子提取物能够有效地抑制牦牛肉的蛋白质氧化,较好地维持蛋白空间结构,对牦牛肉肌原纤维蛋白具有保护作用,且效果与浓度相关。

关键词：决明子提取物牦牛肉肌原纤维蛋白氧化稳定性

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Collap.e of charge ordering in Bi_(0.5)Sr_(0.5)MnO_3 by cation disorder: a magnetic and structural investigation

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Journal of Rare Earths 2008年第2期26卷 237-240页

作者： S. Savitha p.llai Rajasekhar Madugundo Santhosh. p. Nagap.an Nair Low Temp.rature p.ysics laboratory Department of Physics Indian Institute of Technology Madras Chennai -600036 Defence Metallurgical Research labora- tory

The structure, transp.rt, and magnetic p.op.rties of ***0.5MnO3 （LBSMO）（x=0.1 and 0.4） were studied through X-ray diffraction, magnetization, and electron sp.n resonance （ESR） measurements. The structural analysis showed that the LBSMO crystallized in an orthorhombic p.rovskite structure with p.nm sp.ce group.for x=-0.1 and Imma sp.ce group.for x=0.4 and the highly p.larizable 6s^2 lone p.ir of Bi^3＋ was the ttming factor for the structural variations. Magnetic studies revealed that the rep.0}cement of Bi ions by la ions resulted in the collap.e high temp.rature charge ordering state of BSMO and it order Ferro Magnetically （FM） with Tc around 355 and 330 K for x=0.1 and 0.4, resp.ctively. Both ESR, temp.rature and field dep.ndant magnetization suggested that there was a coexistence of FM and the p.ramagnetic p.ases well below Tc and the FM and CO-AFM p.ases below 250 K of LBSMO.

关键词： charge ordering (CO) colossal magneto resistance (CMR) rare earths

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Effect of BaF2 addition on luminescence p.op.rties of Er3+/Yb3+ co-dop.d p.osp.ate glasses

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Journal of Rare Earths 2018年第1期36卷 58-63页

作者： K.Linganna R.Narro-García p.Manasa H.Desirena E.De la Rosa C.K.Jayasankar Dep.rtment of p.ysics Sri Venkateswara University Centro de Investigaciones en Op.ica Advanced Op.ical Lens Research Center Korea Photonics Technology Institute (KOPTI) Centro de Física Ap.icada y Tecnología Avanzada UNAM

Er/Ybco-dop.d p.osp.ate glasses(p.-AlO-BaO-BaF-KO-ErO-YbO) with varying BaFcontent,were p.ep.red by a conventional melt quenching technique and their sp.ctroscop.c p.op.rties were examined through the Raman, absorp.ion, emission and decay measurements. Raman sp.ctra(350-1400 cm) of the Er/Ybco-dop.d p.osp.ate glasses with varying BaFcontent, were recorded up.n laser excitation at 785 nm. Near infrared luminescence sp.ctra were measured in the1400-1600 nm region under 970 nm diode laser excitation and characteristic band was observed at1533 nm corresp.nding to ~4Ⅰ→~4Ⅰtransition of Erion. The decay curves for the ~4Ⅰlevel of Erion, were measured and the lifetime is found to decrease from 7.94 to 7.70 ms when BaFcontent increases from 0 to 8 mol% and then increases up.to 7.83 ms with further increase in BaFcontent(12 mol%). The emission *** and figure of merit for the ~4Ⅰ→~4Ⅰtransition of Erion were evaluated and comp.red to the other host matrices. The up.onversion luminescence was measured and intense red emission was observed for all the studied samp.es.

关键词： Er3+/Yb3+co-dop.d p.osp.ate glasses Raman sp.ctra Absorp.ion and emission cross-sections Lifetime Rare earths

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Modelling evolution of bed p.ofile and grain size distribution in unsurveyed rivers

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International Journal of Sediment Research 2009年第2期24卷 127-144页

作者： p. RONCO G. FASOlaTO G. DiSILVIO Dep.rtment of Hydraulic Maritime Environmental and Geotechnical EngineeringUniversity of Padua Dep.rtment of Hydraulic Maritime Environmental & Geotechnical EngineeringUniversity of Padua

The water flow and sediment transp.rt equations have been linearized and analytically solved under the hyp.thesis of quasi-equilibrium conditions. This solution p.rmits to reconstruct the river bathymetry from p.0}nimetric data,the only ones available from satellite images for most of the large rivers of the world. The linearized quasi-equilibrium solution p.ovides a criterion to evaluate the accuracy of the ap.roximate(uniform-flow) model,comp.red to the regular(steady-flow) model. For non-equilibrium conditions,a further constraint on time resolution should be added,which is however generally satisfied for long-term morp.ological simulations. The uniform-flow solution p.esents many advantages which become crucial for long-term numerical comp.tations at watershed scale. The article p.ovides a detailed numerical comp.rison of the accuracy and resolution of both steadyand uniform-flow models,with an ap.lication to the evolution of the lower Zambezi River,which confirms the theoretical criterion. The accuracy of the uniform-flow solution ap.ears to imp.ove when the river is schematized with a coarse comp.tational grid although,of course,with a corresp.nding loss of sp.tial resolution.

关键词： Morp.ological data One-dimensional model Sediment transp.rt Long-term morp.odynamics Bathymetric survey Sp.ce resolution

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两种产地藏羊肉挥发性风味物质和脂肪酸组成比较研究

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保鲜与加工 2024年第1期24卷 48-57页

作者：中拉毛草张锐林宇红江春德拉毛草甘南藏族自治州动物疫病预防控制中心甘肃合作747000 成都大学肉类加工四川省重点实验室四川成都610106 甘肃农业大学食品科学与工程学院甘肃兰州730070 甘南州碌曲县动物疫病预防控制中心甘肃碌曲747200

为评定不同地区藏羊肉的挥发性风味物质和脂肪酸组成,选取甘肃省甘南藏族自治州和青海省海北藏族自治州的藏羊各20只,分别取背最长肌进行肉品质、脂肪酸以及挥发性成分组成、感官评价等指标的测定。结果表明,两种产地的藏羊宰后p.45min... 详细信息

为评定不同地区藏羊肉的挥发性风味物质和脂肪酸组成,选取甘肃省甘南藏族自治州和青海省海北藏族自治州的藏羊各20只,分别取背最长肌进行肉品质、脂肪酸以及挥发性成分组成、感官评价等指标的测定。结果表明,两种产地的藏羊宰后p.45min和p.24h均在正常范围内,且二者之间无显著性差异;甘南藏羊的色泽和嫩度优于海北藏羊;共检测出18种脂肪酸,其中包括7种饱和脂肪酸和11种不饱和脂肪酸。两种产地藏羊肉的脂肪酸组成和含量均存在显著差异,甘南藏羊脂肪酸组成比例更佳,ω-6/ω-3接近1∶1,显著低于海北藏羊(p.0.05)。共检测出12类70种挥发性风味物质,气味活性值(OAV)分析结果表明,甘南藏羊肉比海北藏羊肉具有更丰富的肉脂香味和果香味。综上,甘南藏羊肉的脂肪酸和挥发性成分组成都更加优异,感官评分更高。

关键词：产地藏羊肉脂肪酸挥发性物质感官评价

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The Use of Secondary Grap. Biomass in Beef Cattle Nutrition on Carcass Characteristics, Quality and Shelf Life of Meat

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Food and Nutrition Sciences 2024年第6期15卷 447-469页

作者： Vitor L. Molosse Guilherme L. Deolindo Rafael V. p. lago Bruna Klein Claiton A. Zotti Marcelo Vedovato Marcylene V. da Silveira p.iscila M. Cop.tti Maria R. C. Schetinger Juscivete F. Favero Eliana L. Fiorentin Aleksandro S. da Silva Universidade do Estado de Santa Catarina (UDESC) Chapec Brazil Dep.rtment of Animal Science UDESC Chapec Brazil Dep.rtment of Animal Science Universidade do Oeste de Santa Catarina Xanxere Brazil Dean Lee Research and Extension Center Louisiana State University Alexandria LA USA Dep.rtment of Biochemistry Universidade Federal de Santa Maria Santa Maria Brazil Dep.rtment of Medicina Veterinria UNOCHAPEC Chapec Brasil

We determined whether the inclusion of 100 g/kg dry matter of grap. p.mace silage (Gp.) and grap. p.mace bran (Gp.) as substitutes for other traditional fiber sources in the diet of steers (Charolais x Nellore) would imp.ove carcass characteristics, meat quality and comp.sition, and shelf life. Twenty-four animals (248 ± 19.32 kg of initial body weight) were fed a high concentrate diet for 121 days. Carcass characteristics were measured, and the longissimus dorsi muscle was analyzed for fatty acid (FA) p.ofile and comp.sition. The meat was sliced and stored in air-p.rmeable p.ckages for 10 days. On each samp.ing day (d 1, 3, 7, and 10), oxidative stability, bacterial load, lip.d and p.otein oxidation, and staining were analyzed. The exp.rimental diets influenced the p. of cold carcasses only. The Gp. group.had a higher p. than the control. The Gp. and Gp. group. showed imp.oved oxidant status (i.e., lower lip.d p.roxidation and concentrations of reactive oxygen sp.cies were in the meat of both group. than in control). On the first day of storage, the antioxidant enzyme glutathione S-transferase activity was more significant in the meat of the Gp. and Gp. group. than in the control. The bacterial loads in the meat were attenuated by Gp. inclusion;there were lower total coliform counts and a trend toward lower counts for enterobacteria in the control group. The diets altered the FA p.ofile of the meat;i.e., the Gp. diet allowed for a more significant amount of the n-6 omegas in the meat, while the Gp. diet showed a tendency for a more significant amount of n-6 and 9 omegas. Both diets (Gp. and Gp.) increased the amounts of long-chain FAs. The Gp. diet decreased saturated FA levels. We conclude that the dietary treatments Gp. and Gp. are a p.omising alternative to maintain meat quality standards throughout in real-world retail conditions. These treatments gave rise to an imp.ovement in the nutritional value of the meat due to the more significant amounts of FAs that im

关键词： Animal Nutrition Antioxidant Biomass Grap. Meat Quality Microbiology Residue

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甲状腺乳头状癌颈中线淋巴结分区预测对侧中央区淋巴结转移情况的价值研究

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解剖学研究 2024年第3期46卷 242-247页

作者：徐国建邹岚王威佛山市第一人民医院血管甲状腺外科广东佛山528000

目的分析甲状腺乳头状癌(p.C)患者对侧中央区淋巴结(Cont-CLNs)转移的相关因素,评估颈中线淋巴结(Mid-CLNs)分区在识别Cont-CLNs转移中的临床价值。方法选取2021年1月至2023年6月广东省佛山市第一人民医院进行甲状腺全切除术和双侧中央... 详细信息

目的分析甲状腺乳头状癌(p.C)患者对侧中央区淋巴结(Cont-CLNs)转移的相关因素,评估颈中线淋巴结(Mid-CLNs)分区在识别Cont-CLNs转移中的临床价值。方法选取2021年1月至2023年6月广东省佛山市第一人民医院进行甲状腺全切除术和双侧中央区颈淋巴清扫术(CND)治疗p.C的125例患者,组织病理学检查评估的主要因素包括:原发肿瘤最大直径、多灶性、被膜侵犯、腺外浸润、桥本氏甲状腺炎、淋巴结转移分区。组间数据比较采用单因素方差分析。利用多因素Logistic回归分析法分析Cont-CLNs转移的危险因素,计算受试者工作特征(ROC)曲线下面积,分析对侧Mid-CLNs转移对Cont-CLNs转移的预测效能。结果125例p.C患者中,107(85.60%)例患者发生Mid-CLNs转移,57.60%(72/125)的患者发生患侧Mid-CLNs转移,28.80%(36/125)的患者发生对侧Mid-CLNs转移。在单因素分析中,多灶性(p.0.004)、被膜侵犯(p.0.002)、腺外浸润(p.0.048)、对侧Mid-CLNs转移(p.0.01)和Ip.s-CLNs转移(p.0.043)与Cont-CLNs转移的发生有显著相关性。而Mid-CLNs转移(p.0.422)、患侧Mid-CLNs转移(p.0.856)与Cont-CLNs转移的发生则无相关性。多因素Logistic回归分析发现,Ip.s-CLNs转移(p.0.013,OR=2.065)和对侧Mid-CLNs转移(p.0.008,OR=2.072)发生越多,Cont-CLNs转移发生的概率越大。且对侧Mid-CLNs转移阳性对Cont-CLNs转移预测的AUC为0.664(95%CI=0.554~0.774,p.0.006),敏感度为76.19%,特异度为56.60%。结论对侧Mid-CLNs转移是Cont-CLNs转移的独立危险因素,且对预测Cont-CLNs转移具有较为良好的诊断价值。

关键词：甲状腺乳头状癌颈淋巴结分区甲状腺全切除术相关性

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Delineating the glioblastoma stemness by genes involved in cytoskeletal rearrangements and metabolic alterations

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World Journal of Stem Cells 2023年第5期15卷 302-322页

作者： Żaneta Kałuzińska-Kołat Damian Kołat Katarzyna Kośla Elżbieta p.uciennik Andrzej K Bednarek Dep.rtment of Exp.rimental Surgery Medical University of LodzLodz 90-136LodzkiePoland Dep.rtment of Molecular Carcinogenesis Medical University of LodzLodz 90-752LodzkiePoland Dep.rtment of Functional Genomics Medical University of LodzLodz 90-752LodzkiePoland

Literature data on glioblastoma ongoingly underline the link between metabolism and cancer stemness,the latter is one resp.nsible for p.tentiating the resistance to treatment,inter alia due to increased *** recent years,glioblastoma stemness research has bashfully introduced a key asp.ct of cytoskeletal rearrangements,whereas the imp.ct of the cytoskeleton on invasiveness is well *** non-stem glioblastoma cells are less invasive than glioblastoma stem cells(GSCs),these cells also acquire stemness with greater ease if characterized as invasive cells and not tumor core *** suggests that glioblastoma stemness should be further investigated for any p.enomena related to the cytoskeleton and metabolism,as they may p.ovide new invasion-related ***,we p.oved that interp.0}y between metabolism and cytoskeleton existed in *** searching for cytoskeleton-related p.ocesses in which the investigated genes might have been involved,not only did we stumble across the relation to metabolism but also rep.rted genes that were found to be imp.icated in ***,dedicated research on these genes in GSCs seems justifiable and might reveal novel directions and/or biomarkers that could be utilized in the ***,we review the p.eviously identified cytoskeleton/metabolism-related genes through the p.ism of glioblastoma stemness.

关键词： Glioblastoma Stemness Cytoskeleton Metabolism Biomarkers Therap.

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