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Carbon stocks in a highly fragmented landscape with seasonally dry tropical forest in the Neotropics

forest Ecosystems 2022年第2期9卷 168-177页

作者： N.Mesa-Sierra J.Laborde R.Chaplin-Kramer f.Escobar Instituto Tecnologico y de Estudios Superiores de Occidente Centro Interdisciplinario para la Formacion y Vinculacion SocialPeriferico Sur Manuel Gomez Morin 858545604TlaquepaqueJaliscoMexico Gnosis-Naturaleza con ciencia A.C.Lorenzo Barcelata 510145239GuadalajaraJaliscoMexico Instituto de Ecologia A.C.Ecologia FuncionalCarretera Antigua a Coatepec 351El Haya91073XalapaVeracruzMexico Natural Capital Project Woods Institute for the EnvironmentStanford University327 Campus DriveStanfordCA94305USA Institute on the Environment University of Minnesota1954 Buford AveSt.PaulMinnesota55108USA Instituto de Ecologia A.C.EcoetologiaCarretera Antigua a Coatepec 351El Haya91073XalapaVeracruzMexico

Background:Global modeling of carbon storage and sequestration often mischaracterizes unique ecosystems such as the seasonally dry tropical forest of the central region of the Gulf of Mexico,because species diversity is usually underestimated,as is their carbon *** this study,aboveground and soil carbon stocks were estimated to determine the climate mitigation potential of this highly degraded landscape(f forest cover).Results:Tree species in the study area had carbon content values that were 30%–40%higher than the standard value proposed by the IPCC(i.e.,50%).Tropical oak forest in the region,despite its restricted distribution and low species richness,accounted for the highest mean carbon stocks per unit *** main factors driving spatial variability in carbon stocks were:maximum precipitation,soil organic matter,clay and silt *** strong relationship was found between aboveground carbon stocks and soil organic carbon in the study ***-fication of carbon stocks is an important consideration in the assessment of the conservation value of remnants of native vegetation in human-modified ***:This study demonstrates the importance of the highly fragmented tropical dry regions of the Neo-tropics in maintaining landscape functionality and providing key ecosystem services such as carbon *** results also highlight how crucial field-based studies are for strengthening the accuracy of global ***,this approach reveals the real contribution of ecosystems that are not commonly taken into account in the mitigation of climate change effects.

关键词： Seasonally dry tropical region Ecosystem services Carbon sequestration Human modified landscapes Climate change mitigation

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Computational Method for Extracting and Modeling Periodicities in Time Series

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Open Journal of Statistics 2015年第6期5卷 604-617页

作者： Eduardo González-Rodríguez Héctor Villalobos Víctor Manuel gomez-Munoz Alejandro Ramos-Rodríguez Oceanografia Tropical CICESE Unidad La PazLa PazMexico Instituto Politecnico Nacional-CICIMAR La PazB.C.SMexico

Periodicity is common in natural processes, however, extraction tools are typically difficult and cumbersome to use. Here we report a computational method developed in MATLAB through a function called Periods with the aim to find the main harmonic components of time series data. This function is designed to obtain the period, amplitude and lag phase of the main harmonic components in a time series (Periods and lag phase components can be related to climate, social or economic events). It is based on methods of periodic regression with cyclic descent and includes statistical significance testing. The proposed method is very easy to use. furthermore, it does not require full understanding of time series theory, nor require many inputs from the user. However, it is sufficiently flexible to undertake more complex tasks such as forecasting. Additionally, based on previous knowledge, specific periods can be included or excluded easily. The output results are organized into two groups. One contains the parameters of the adjusted model and their f statistics. The other consists of the harmonic parameters that best fit the original series according to their importance and the summarized statistics of the comparisons between successive models in the cyclic descent process. Periods is tested with both, simulated and actual sunspot and Multivariate ENSO Index data to show its performance and accuracy.

关键词： Time Series Cyclic Descent Harmonic Periodicity forecasting Sunspot Multivariate ENSO Index

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Culture Mixed-Sex and Monosex of Tilapia in Ponds in Mexico City

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Agricultural Sciences 2015年第2期6卷 187-194页

作者： Jose Luis gomez-Márquez Bertha Pena-Mendoza Maria del Carmen Alejo-Plata Jose Luis Guzmán-Santiago Laboratorio de Limnología Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMéxicoD.F.México Campus Puerto Angel Universidad del MarCiudad UniversitariaPuertoángelMéxico

In this study, the growth of Oreochromis niloticus both mixed sex and males sexually reversed were analyzed in concrete ponds in the fES Zaragoza, UNAM, under the environmental conditions of the Mexico City. The experiment was carried from May to November 2013, in two concrete ponds of 50 m2. Similar feeding regime and stocking density of fish were maintained for the culture systems. Different growth parameters like body weight, length, daily weight gain (DWG), specific growth rate (SGR), feed conversion rate (fCR), fulton’s condition index (K) and survival were analyzed during six months culture period. It was found that culture with monosex males tilapias yielded the highest weight, length, DWG and SGR compared to mixed sex populations tilapias. Water quality was monitored along the experiment. Based on the results, there were statistically significant differences in size (W = 20942.5, p 5 mg/L), warm water (>20°C), productive (3) and slightly basic (pH > 8). Acceptable growth of fish and a yield of 3 ton/ha/6 months were obtained in both two ponds;therefore, the culture of tilapia under conditions of Mexico City was recommended.

关键词： Tilapia Culture Growth Survival Mexico City

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一所大学建筑中用高效率的照明合理使用电能

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供用电 2003年第6期20卷 6-9页

作者： A.Gabaldon A.Molina C.Roldan J.A.fuentes E.gomez f.Marin f.SeQuera P.Morales 西班牙西班牙西班牙西班牙西班牙西班牙西班牙西班牙

0引言为了在用能效率上作出工程努力,Cortagena技术大学去年4月已决定实施一项雄心勃勃的计划,要在此后的4年中削减用电费用.为了证实不同政策的可行性和成本效益,应用于原海军医院(工业工程高等技术学校总部)的许多展示活动将在最近期... 详细信息

0引言为了在用能效率上作出工程努力,Cortagena技术大学去年4月已决定实施一项雄心勃勃的计划,要在此后的4年中削减用电费用.为了证实不同政策的可行性和成本效益,应用于原海军医院(工业工程高等技术学校总部)的许多展示活动将在最近期内完成.当然,在此建筑中合理用电的对象将集中在两个主要的电气末端即:电热和空调,以及照明.本文将描述原海军医院照明需量的现状:用电量,约束条件,机会和平面蓝图,以便完成照明末端用电的显著改善.

关键词：高校建筑电气照明电能绿色照明建筑物

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DNA repair capacity correlates with standardized uptake values from 18f-fluorodeoxyglucose positron emission tomography/CT in patients with advanced non-small-cell lung cancer

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Chronic Diseases and Translational Medicine 2018年第2期4卷 109-116页

作者： Xin (Eric) Jiang Ting Xu Qingyi Wei Peng Li Daniel R. gomez Laurence E. Court Zhongxing Liao Department of Radiation Oncology The University of Texas MD Anderson Cancer CenterHoustonTX 77030USA Duke University DurhamNC 27708USA Duke Cancer Institute Duke University Medical CenterDurhamNC 27710USA Department of Medical Oncology Henan Cancer HospitalZhengzhouHenan 450008China Department of Radiation Physics The University of Texas MD Anderson Cancer CenterHoustonTX 77030USA

Objective: The DNA repair capacity (DRC) of tumor cells is an important contributor to resistance to radiation and platinum-based drugs. Because DRC may be affected by tumor cell metabolism, we measured DRC in lymphocytes from patients with non-small-cell lung cancer (NSCLC) and compared the findings with the maximum standardized uptake value (SUVmax) on 18 f-fluorodeoxyglucose positron emission tomography (fDG PET) after (chemo)radiation therapy. Methods: This study included 151 patients with stage IA-IV NSCLC who had fDG PET at a single institution and donated blood samples before chemotherapy. We assessed the correlation of DRC, measured in peripheral T lymphocytes by a host-cell reac-tivation assay with SUVmax and their associations with overall survival (OS) time by hazards ratios calculated with a Cox pro-portional hazards regression model. Results: SUVmax of the primary tumor at diagnosis was inversely associated with lymphocyte DRC (r＝－0.175, P＝0.032), particularly among patients with advanced disease (r ＝－0.218, P ＝ 0.015). However, △SUVmax of primary tumor was not significantly associated with DRC (r＝0.005, P＝0.968). SUVmax of regional lymph nodes at diagnosis (r＝－0.307, P＝0.0008) and after (chemo)radiation treatment (r＝－0.329, P＝0.034) and SUVmax of the primary tumor after (chemo)radiation treatment (r＝－0.253, P＝0.045) were also inversely associated with OS time. Conclusion: DRC was inversely associated with primary tumor SUVmax before treatment but not with △SUVmax after (chemo)radiation.

关键词： DNA repair capacity Standardized uptake value 18f-fluorodeoxyglucose positron emission tomography Outcome Non-small-cell lung cancer

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The Effect of Gnaphafium oxyphyllum var. natalie on Cancer and Blood Cells

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Journal of Pharmacy and Pharmacology 2016年第5期4卷 231-239页

作者： Elisa Vega-Avila Shindu Irais gomez-Covarrubias Adolfo Espejo-Sema Elizabeth Hernandez-Perez Maria de los Angeles Aguilar-Santamaria Departamento de Ciencias de la Salud. Universidad Autonoma Metropolitana. Unidad Iztapalapa. Mexico D.F. 09340 Mexico Departamento de Biologia. Universidad Autonoma Metropolitana. Unidad Iztapalapa. Mexico D.F. 09340 Mexico

Gnaphalium oxyphyllum DC is a medicinal plant whose common uses by Mexican people include the treatment of cancer. The toxicity of the aqueous and organic fractions as well as the aqueous decoction of G. oxyphyllum var. natalie f. J. Espinosa were assessed on three human cancer cell lines as well as in blood cells in healthy human lymphocyte cultures. Cytotoxic activity was assessed by the Sulforhodamine B method on HeLa （human cervical carcinoma）, T47D （human breast carcinoma） and 22Rvl （human prostate carcinoma cancer）. Colchicine was used as positive control. The decoction was also tested on lymphocytes from healthy donors through the mitotic index as biomarker. We used whole blood for these cultures and estimated the effect of the extract on platelets, leukocytes and erythrocytes. The aqueous decoction was cytotoxic （EDs0 〈 20 μg/mL） on the three cancer cell lines. The mitotic index in the exposed lymphocyte cultures did not significantly differ from the control nor the blood counts showed any difference between the experimental and control cultures. These results prove that the toxic effect of the aqueous decoction of G. oxyphyllum var. natalie is specific for cancer cell lines.

关键词： Gnaphalium oxyphyllum cancer cell lines cytotoxicity lymphocyte culture mitotic index.

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Estimation of visceral fat is useful for the diagnosis of significant fibrosis in patients with non-alcoholic fatty liver disease

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World Journal of Gastroenterology 2020年第42期26卷 6658-6668页

作者： Marta Hernández-Conde Elba Llop Carlos fernández Carrillo Beatriz Tormo Javier Abad Luis Rodriguez Christie Perelló Marta López gomez JoséLuis Martínez-Porras Natalia fernández Puga Maria Trapero-Marugan Enrique fraga Carlos ferre Aracil JoséLuis Calleja Panero Gastroenterology and Hepatology Department IDIPHISAHospital Universitario Puerta de Hierro-MajadahondaMadrid 28222Spain Centro de Investigación Biomédica en Red en elÁrea temática de Enfermedades Hepáticas Instituto de Salud Carlos IIIMadrid 28029Spain

BACKGROUND Obesity is a risk factor for non-alcoholic fatty liver disease(NAfLD),although obese patients with NAfLD do not always develop significant *** distribution of body fat could predict the risk of NAfLD *** To investigate the role of bioelectrical impedance-estimated visceral fat(Vf)in assessing NAfLD *** In this cross-sectional study,patients with biopsy-proven NAfLD were prospectively *** patients underwent anthropometric evaluation,blood tests and bioelectrical impedance *** Between 2017 and 2020,119 patients were included[66.4%male,56 years(SD 10.7),62.2%obese,61.3%with metabolic syndrome].Sixty of them(50.4%)showed significant fibrosis(≥f2)in liver ***,Vf and metabolic syndrome were associated with significant fibrosis(61 years vs 52 years,16.4 vs 13.1,73.3%vs 49.2%,respectively;Pfor all).In the multivariate analysis,Vf and age were independently associated with significant fibrosis(Vf,OR:1.11,95%CI:1.02-1.22,P=0.02;age,OR:1.08,95%CI:1.03-1.12,Pf 0.75,which was not inferior to transient elastography or NAfLD fibrosis score *** developed a nomogram including age and Vf for assessing significant fibrosis in routine *** Vf is a surrogate marker of liver fibrosis in patients with *** impedance analysis is an inexpensive and simple method that can be combined with age to guide patient referral when other resources may be unavailable.

关键词： Non-alcoholic fatty liver disease Visceral fat Liver fibrosis Bioimpedanciometry Metabolic syndrome Obesity

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日粮中蛋白质和纤维水平对仔猪生产性能和健康状况的影响

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国外畜牧学（猪与禽） 2009年第6期29卷 1-7页

作者：冯占雨 R.G.Hermes f.Molist M.Ywazaki M.Nofrarías A.gomez de Segura J.Gasa J.f.Pérez

为了研究日粮的蛋白质和纤维水平对仔猪生产性能和健康状况的互作,特选择96头35日龄的仔猪(体重为9.11±0.60kg),分32个栏饲养,每栏3头,分成4个日粮处理组,饲喂期21d。在设定的2×2因子处理中,4种日粮以大米、奶制品和大豆粕为基础配制... 详细信息

为了研究日粮的蛋白质和纤维水平对仔猪生产性能和健康状况的互作,特选择96头35日龄的仔猪(体重为9.11±0.60kg),分32个栏饲养,每栏3头,分成4个日粮处理组,饲喂期21d。在设定的2×2因子处理中,4种日粮以大米、奶制品和大豆粕为基础配制,日粮蛋白质设两个水平(15.4%与19.4%,风干基),纤维也设两个水平[低水平纤维(Lf)为含5.3%中性洗涤纤维,高水平纤维(Hf)为含7.15%中性洗涤纤维,风干基]。高水平纤维日粮组在基础日粮中添加了40g/kg的小麦麸和20g/kg的甜菜浆。每周测定动物生产性能,试验第1天和最后一天收集粪样进行微生物学分析,并且按1(液态)到4(硬实)的评分体系对粪便进行评分。在试验最后1d,每栏选1头猪采集血液,分析急性期反应蛋白(acute-phase protein)和主要急性期反应蛋白(major acute-phase prot)(即Pig-MAP)的含量,随后进行屠宰,对消化道(包括内容物)进行称重,并进行结肠组织学分析。饲喂高水平纤维日粮的仔猪具有较大的平均日增重(390g与457g,P≤0.001)和大肠重量(以占体重比例衡量为4.4%与5.4%,P≤0.05)。这与较高的短链脂肪酸浓度(尤其是乙酸和丁酸)、较少的大肠杆菌数量(每克粪便含7.77与6.86logcfu,P≤0.05)和较高乳酸杆菌与肠道细菌比(0.76与1.37,P≤0.05)是相符的。虽然日粮蛋白质水平没有改变猪的生产性能,但是20%的蛋白质水平提高(P≤0.05)了小肠(6.5与7.7)和大肠(3.8与4.3)的相对重量(占体重的百分比)。在大肠内,含20%蛋白质的日粮使仔猪杯状细胞数量增加(4.6/100与5.4/100μm;P≤0.05),并使肠上皮内淋巴细胞数量减少(1.8/100与1.3/100μm;P≤0.05)。在健康状况方面,提高日粮纤维水平所产生的效果与日粮中的蛋白质含量有关。在含16%蛋白质的日粮中增加纤维水平可降低粪便评分值、增加抗生素治疗次数,然而在含20%蛋白的日粮中增加纤维水平,所产生的情况与此相反。与蛋白质含量为16%的日粮组仔猪相比,蛋白质含量为20%的日粮组仔猪血液Pig-MAP浓度较低(P≤0.05)。总的来说,日粮蛋白质对消化道重量和肠壁完整性起主要作用,然而日粮纤维可提高仔猪生产性能,并且促进了肠道微生物区系和发酵指标的改善。

关键词：日粮纤维仔猪蛋白质甜菜浆小麦麸

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ORAI channels are critical for receptor-mediated endocytosis of albumin and govern the pathogenesis of diabetic nephropathy

ORAI channels are critical for receptor-mediated endocytosis...

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第十一届全国钙信号和细胞功能研讨会

作者： Bo Zeng Gui-Lan Chen Eliana Garcia-Vaz Sunil Bhandari Nikoleta Daskoulidou Lisa M. Berglund Hongni Jiang Li Huang Qin Wan Stephen L.Atkin Maria f.gomez Shang-Zhong Xu Centre for Cardiovascular and Metabolic Research Hull York Medical School University of Hull Key Laboratory of Medical Electrophysiology Ministry of Education and Institute of Cardiovascular Research Sichuan Medical University Department of Clinical Sciences in Malm? Lund University Diabetes Centre Lund University

Impaired albumin reabsorption by proximal tubular epithelial cells(PTECs) has been highlighted in diabetic nephropathy(DN), but little is known about the molecular mechanisms. Here we find that the Ca release-activated Ca(CRAC) channels, ORAI1-3, are preferentially expressed in PTECs and down-regulated in patients with DN. Hyperglycaemia or blockade of insulin signalling reduces the expression of ORAI1-3. Inhibition of ORAI channels by BTP2 and diethylstilbestrol or silencing of ORAI expression impairs albumin uptake. In vivo injection of BTP2 exacerbates albuminuria in streptozotocin-induced and Akita diabetic mice. The endocytosis of albumin is Ca-dependent and accompanied by ORAI1 internalization in PTECs. Amnionless(AMN) associates with ORAIs and forms STIM/ORAI/AMN complexes after internal Ca store depletion. STIM1/ORAI1 colocalizes with clathrin, but not with caveolin, at the apical membrane of PTECs, which determines clathrin-mediated endocytosis of albumin. These findings provide insights into the molecular mechanisms of protein reabsorption and novel potential targets for treating diabetic proteinuria.

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Hepatocellular carcinoma: Review of disease and tumor biomarkers

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World Journal of Hepatology 2016年第10期8卷 471-484页

作者： Jin Un Kim Mohamed I f Shariff Mary M E Crossey Maria gomez-Romero Elaine Holmes I Jane Cox Haddy K S fye Ramou Njie Simon D Taylor-Robinson Division of Digestive Health Department of Surgery and Cancer Imperial College London Division of Computational Medicine Department of Surgery and Cancer Imperial College London the foundation for Liver Research Institute of Hepatology MRC Gambia

Hepatocellular carcinoma(HCC) is a common malignancy and now the second commonest global cause of cancer death. HCC tumorigenesis is relatively silent and patients experience late symptomatic presentation. As the option for curative treatments is limited to early stage cancers, diagnosis in non-symptomatic individuals is crucial. International guidelines advise regular surveillance of high-risk populations but the current tools lack sufficient sensitivity for early stage tumors on the background of a cirrhotic nodular liver. A number of novel biomarkers have now been suggested in the literature, which may reinforce the current surveillance methods. In addition, recent metabonomic and proteomic discoveries have established specific metabolite expressions in HCC, according to Warburg's phenomenon of altered energy metabolism. With clinical validation, a simple and non-invasive test from the serum or urine may be performed to diagnose HCC, particularly benefiting low resource regions where the burden of HCC is highest.

关键词： Hepatocellular carcinoma Biomarker Metabonomics Warburg hypothesis Serum Plasma Urine

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