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https://www.readbyqxmd.com/read/28641404/ph-rather-than-nitrification-and-urease-inhibitors-determines-the-community-of-ammonia-oxidizers-in-a-vegetable-soil
#1
Ruijiao Xi, Xi-En Long, Sha Huang, Huaiying Yao
Nitrification inhibitors and urease inhibitors, such as nitrapyrin and N-(n-butyl) thiophosphoric triamide (NBPT), can improve the efficiencies of nitrogen fertilizers in cropland. However, their effects on ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) across different soil pH levels are still unclear. In the present work, vegetable soils at four pH levels were tested to determine the impacts of nitrification and urease inhibitors on the nitrification activities, abundances and diversities of ammonia oxidizers at different pHs by real-time PCR, terminal restriction fragment length polymorphism (T-RFLP) and clone sequence analysis...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28632597/leadership-communication-and-negotiation-across-a-diverse-workforce-an-aoa-critical-issues-symposium
#2
Denis R Clohisy, Michael J Yaszemski, Joanne Lipman
The current workforce in the United States is rapidly changing and is increasingly inclusive of individuals from a broad range of ages, ethnicities, and cultural backgrounds. Engaging and leading a diverse workforce creates great opportunities for innovation and adaptation in our evolving medical economic and clinical care delivery environment. For optimal engagement of employees and partners, orthopaedic surgeons must develop the necessary skills for executing change inside complex organizations and across teams composed of a variety of providers and skilled workers...
June 21, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28629676/percutaneous-nephrolithotomy-puncture-and-tract-dilation-evidence-on-the-safety-of-approaches-to-the-infundibulum-of-the-middle-renal-calyx
#3
Panagiotis Kallidonis, Christina Kalogeropoulou, Iason Kyriazis, Dimitrios Apostolopoulos, Panagiotis Kitrou, Dimitrios Kotsiris, Panteleimon Ntasiotis, Evangelos Liatsikos
OBJECTIVES: To investigate the anatomical relations of the papillary, infundibular and pelvic approach to percutaneous nephrolithotomy (PCNL) and evaluate the amount of vascularization at the respective sites. MATERIALS: (99m)Tc-dimercaptosuccinic acid SPECT/CT renal scintigraphies or Computerized tomographies perfusion (CTP) were performed in 40 patients (prone n=20 or supine position n=20). The angle of approach (AoA) for access tracts the respective regions of interest (ROIs) to the mid-calyceal papilla and infundibulum as well as renal pelvis were designed and compared...
June 16, 2017: Urology
https://www.readbyqxmd.com/read/28611197/treatment-of-pancreatic-cancer-patient-derived-xenograft-panel-with-metabolic-inhibitors-reveals-efficacy-of-phenformin
#4
N V Rajeshkumar, Shinichi Yabuuchi, Shweta Pai, Elizabeth De Oliveira, Jurre J Kamphorst, Joshua D Rabinowitz, Héctor Tejero, Fatima Al-Shahrour, Manuel Hidalgo, Anirban Maitra, Chi V Dang
Purpose: To identify effective metabolic inhibitors to suppress the aggressive growth of pancreatic ductal adenocarcinoma (PDAC), we explored the in vivo anti-tumor efficacy of metabolic inhibitors in a panel of patient-derived PDAC xenograft models (PDXs), and investigated whether genomic alterations of tumors correlate with the sensitivity to metabolic inhibitors. <p>Experimental Design: Mice with PDAC tumors from six to thirteen individual PDXs were randomized and treated, once daily for 4 weeks, with either PBS (vehicle) or the glutaminase inhibitor BPTES, transaminase inhibitor aminooxyacetate (AOA), pyruvate dehydrogenase kinase inhibitor dichloroacetate (DCA), autophagy inhibitor chloroquine (CQ), mitochondrial complex I inhibitor phenformin/metformin...
June 13, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28593806/a-nitrogen-removal-system-to-limit-water-exchange-for-recirculating-freshwater-aquarium-using-dhs-usb-reactor
#5
Nur Adlin, Norihisa Matsuura, Yuki Ohta, Yuga Hirakata, Shinya Maki, Masashi Hatamoto, Takashi Yamaguchi
This study proposes a biological nitrogen removal system for freshwater aquaria consisting of a down-flow hanging sponge (DHS) and an up-flow sludge blanket (USB). DHS-USB systems can perform nitrification and denitrification simultaneously, reducing ammonia (NH3) and nitrate (NO3(-)) toxicity in the water. The performance of the system was evaluated using on-site fresh water aquaria at ambient temperature (23-34°C) over 192 days. NH3 and nitrite (NO2(-)) were maintained at a detection limit of 0.01 mg N L(-1) and NO3(-) was maintained below 10 mg N L(-1), despite limited water exchange...
June 13, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28590387/the-2016-american-orthopaedic-association-japanese-orthopaedic-association-traveling-fellowship
#6
Sumon Nandi, Samuel K Cho, Brett A Freedman, Reza Firoozabadi
The American Orthopaedic Association-Japanese Orthopaedic Association (AOA-JOA) Traveling Fellowship, which began in 1992 as a collaborative effort between the 2 orthopaedic communities, is aimed at fostering leadership among early-career surgeons through clinical, academic, and cultural exchange. Over 3 weeks, we experienced an extraordinary journey that led us across nearly 800 miles of the picturesque Japanese countryside, with stops at 6 distinguished academic centers. The opportunity to become personally acquainted with orthopaedic leaders in Japan, learn from their experiences, and immerse ourselves in the ancient and storied culture of a beautiful country was one that we will not soon forget...
June 7, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28590386/can-we-agree-on-expectations-and-assessments-of-graduating-residents-2016-aoa-critical-issues-symposium
#7
Markuu Nousiainen, Ian Incoll, Terrance Peabody, J Lawrence Marsh
Orthopaedic educators are responsible for training a prepared and competent workforce that will provide effective care for a growing number of patients with musculoskeletal conditions. Currently, there are both internal and external forces that pose substantial challenges to medical students, residents, program directors, faculty members, and chairs in achieving this goal. One area of particular concern is the education of surgeons, whose knowledge and professional behavior must be matched by their ability to acquire procedural skills...
June 7, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28572785/age-of-acquisition-effects-on-word-processing-for-chinese-native-learners-english-erp-evidence-for-the-arbitrary-mapping-hypothesis
#8
Jin Xue, Tongtong Liu, Fernando Marmolejo-Ramos, Xuna Pei
The present study aimed at distinguishing processing of early learned L2 words from late ones for Chinese natives who learn English as a foreign language. Specifically, we examined whether the age of acquisition (AoA) effect arose during the arbitrary mapping from conceptual knowledge onto linguistic units. The behavior and ERP data were collected when 28 Chinese-English bilinguals were asked to perform semantic relatedness judgment on word pairs, which represented three stages of word learning (i.e., primary school, junior and senior high schools)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28556856/proposed-amendments-to-the-aoa-constitution-bylaws-and-code-of-ethics
#9
(no author information available yet)
No abstract text is available yet for this article.
June 1, 2017: Journal of the American Osteopathic Association
https://www.readbyqxmd.com/read/28552035/novel-pnkp-mutation-in-siblings-with-ataxia-oculomotor-apraxia-type-4
#10
Nicoline Schiess, David S Zee, Khurram A Siddiqui, Miklos Szolics, Ayman W El-Hattab
The phenotypic and genetic spectrum of ataxia with oculomotor apraxia (AOA) disorders is rapidly evolving and new technologies such as genetic mapping using whole exome sequencing reveal subtle distinctions among the various subtypes. We report a novel PNKP mutation in two siblings with progressive ataxia, abnormal saccades, sensorimotor neuropathy and dystonia consistent with the AOA type 4 phenotype. Laboratory evaluation revealed hypoalbuminemia, hypercholesterolemia with elevated LDL, elevated IgE levels and normal α fetoprotein levels...
March 2017: Journal of Neurogenetics
https://www.readbyqxmd.com/read/28550390/clinical-patterns-and-characteristics-of-ankylosing-spondylitis-in-china
#11
Qiaoxia Qian, Xia Xu, Hongjun He, Hengdong Ji, Hui Zhang, Yue Ding, Sheng-Ming Dai, Yaohong Zou, Qi Zhu, Chengde Yang, Shuang Ye, Lindi Jiang, Jian-Ping Tang, Qiang Tong, Dongyi He, Dongbao Zhao, Yuan Li, Yanyun Ma, Jingru Zhou, Ziyu Yuan, Juan Zhang, Li Jin, Xiaodong Zhou, John D Reveille, Hejian Zou, Jiucun Wang
The study aimed to determine whether unique clinical patterns of AS may exist in China, specifically to explore the different clinical manifestations caused by gender, HLA-B27 status, and age at disease onset. The multicenter cross-sectional survey was conducted and 1251 patients were enrolled across China, representing a broad spectrum of Chinese AS patients. The mean age at onset and diagnosis were 29.2 (11.4) and 33.5 (12.6) years, respectively. The male/female ratio was 2.7:1. Acute anterior uveitis (AAU) was experienced in 10...
May 27, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28543691/emergent-macrophytes-modify-the-abundance-and-community-composition-of-ammonia-oxidizers-in-their-rhizosphere-sediments
#12
Dayong Zhao, Xiaowei He, Rui Huang, Wenming Yan, Zhongbo Yu
Ammonia oxidation is a crucial process in global nitrogen cycling, which is catalyzed by the ammonia oxidizers. Emergent plants play important roles in the freshwater ecosystem. Therefore, it is meaningful to investigate the effects of emergent macrophytes on the abundance and community composition of ammonia oxidizers. In the present study, two commonly found emergent macrophytes (Zizania caduciflora and Phragmitas communis) were obtained from freshwater lakes and the abundance and community composition of the ammonia-oxidizing prokaryotes in the rhizosphere sediments of these emergent macrophytes were investigated...
May 22, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28540424/screening-and-optimizing-of-inhibitors-for-ammonia-oxidizing-bacteria-in-sediments-of-malodorous-river
#13
Jianhua Wang, Yan He, Jin Zhu, Huimin Guan, Minsheng Huang
The proper use of selective ammonia-oxidizing archaea (AOA) and/or ammonia-oxidizing bacteria (AOB) inhibitors is critical to distinguish AOA and AOB contribution. In this research, three inhibitors including ampicillin, dicyandiamide (DCD), and allylthiourea (ATU) were examined mainly focusing on inhibiting dosage, adaptability, and effects. The results showed that the optimized inhibitory dosage of ampicillin, DCD, and ATU was separately 1.5 g L(-1), 1 mM, and 25 μM. Among the three inhibitors, ATU exhibited the strongest and persistent inhibition effects and resulted in up to 90% inhibition in the AOB-enriched culture...
May 24, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28535318/allopathic-and-osteopathic-medicine-unify-gme-accreditation-a-historic-convergence
#14
Abdul-Kareem H Ahmed, Peter F Schnatz, Eli Y Adashi
In 1968, the American Medical Association resolved to accept qualified graduates of osteopathic medical schools into its accredited Graduate Medical Education (GME) programs. An equally momentous decision was arrived at in 2014 when the Accreditation Council for Graduate Medical Education (ACGME), the American Osteopathic Association (AOA), and the American Association of Colleges of Osteopathic Medicine (AACOM) resolved to institute a single unified GME accreditation system by July 1, 2020. As envisioned, the unified accreditation system will all but assure system-wide consistency of purpose and practice in anticipation of the Next Accreditation System (NAS) of the ACGME...
May 2017: Family Medicine
https://www.readbyqxmd.com/read/28523826/occurrence-and-abundance-of-ammonia-oxidizing-archaea-and-bacteria-from-the-surface-to-below-the-water-table-in-deep-soil-and-their-contributions-to-nitrification
#15
Lei Zheng, Xue Zhao, Guibing Zhu, Wei Yang, Chao Xia, Tao Xu
Using molecular biology methods (qualitative and quantitative PCR), we determined the occurrence and abundance of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) from a dry inland soil in Basel, Switzerland, and from the riparian zone of Baiyangdian Lake, China. We also determined the contributions of these microorganisms to ammonia oxidization at different depths based on the nitrification rate. The number of archaeal amoA genes (the key functional gene in AOA) was larger than the number of bacterial amoA genes in each sample, suggesting a dominant role for the AOA amoA gene in environments with a low ammonium concentration...
May 19, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28509835/changes-by-the-accreditation-council-for-graduate-medical-education-success-or-failure-an-aoa-critical-issues-symposium
#16
Terry L Thompson, Rick W Wright, Thomas J Nasca
The Accreditation Council for Graduate Medical Education has introduced far-reaching changes to the educational requirements for postgraduate trainees over the past 15 years. These steps were taken to improve the quality of education and to enhance patient safety. This symposium will explore the design and implementation of these changes and determine if they are succeeding.
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28499263/effect-of-fumigation-with-chloropicrin-on-soil-bacterial-communities-and-genes-encoding-key-enzymes-involved-in-nitrogen-cycling
#17
Jun Li, Bin Huang, Qiuxia Wang, Yuan Li, Wensheng Fang, Dongdong Yan, Meixia Guo, Aocheng Cao
Chloropicrin (CP) is a potential alternative for methyl bromide as a soil fumigant given that the use of methyl bromide has become limited. However, little is known about how fumigation with CP affects the condition of the soil microbial community. In this study, 16S rRNA amplicon sequencing and quantitative PCR were combined to investigate the effect of CP on soil bacterial community. In total, 938,922 effective reads were obtained from 18 samples and clustered into 58,662 operational taxonomic units at a similarity cut-off of 97%...
August 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28487691/microbial-community-response-on-wastewater-discharge-in-boreal-lake-sediments
#18
Jatta Saarenheimo, Sanni L Aalto, Antti J Rissanen, Marja Tiirola
Despite high performance, municipal wastewater treatment plants (WWTPs) still discharge significant amounts of organic material and nitrogen and even microbes into the receiving water bodies, altering physico-chemical conditions and microbial functions. In this study, we examined how nitrified wastewater affects the microbiology of boreal lake sediments. Microbial community compositions were assessed with next generation sequencing of the 16S rRNA gene, and a more detailed view on nitrogen transformation processes was gained with qPCR targeting on functional genes (nirS, nirK, nosZI, nosZII, amoAarchaea, and amoAbacteria)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28487508/biochar-amendment-reduces-paddy-soil-nitrogen-leaching-but-increases-net-global-warming-potential-in-ningxia-irrigation-china
#19
Yongsheng Wang, Yansui Liu, Ruliang Liu, Aiping Zhang, Shiqi Yang, Hongyuan Liu, Yang Zhou, Zhengli Yang
The efficacy of biochar as an environmentally friendly agent for non-point source and climate change mitigation remains uncertain. Our goal was to test the impact of biochar amendment on paddy rice nitrogen (N) uptake, soil N leaching, and soil CH4 and N2O fluxes in northwest China. Biochar was applied at four rates (0, 4.5, 9 and13.5 t ha(-1) yr(-1)). Biochar amendment significantly increased rice N uptake, soil total N concentration and the abundance of soil ammonia-oxidizing archaea (AOA), but it significantly reduced the soil NO3(-)-N concentration and soil bulk density...
May 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28476076/effects-of-fumigation-with-metam-sodium-on-soil-microbial-biomass-respiration-nitrogen-transformation-bacterial-community-diversity-and-genes-encoding-key-enzymes-involved-in-nitrogen-cycling
#20
Jun Li, Bin Huang, Qiuxia Wang, Yuan Li, Wensheng Fang, Dawei Han, Dongdong Yan, Meixia Guo, Aocheng Cao
Metam-sodium (MS) is widely used as a soil pre-plant fumigant as methyl bromide is phased out of agriculture. However, the information about how fumigation with MS affects the soil microbial community is still limited. In this study, a 66-day-long experiment was conducted to ascertain the effects of MS on soil substrate-induced respiration (SIR), microbial biomass nitrogen (MBN), NH4(+)-N and NO3(-)-N concentrations, as well as the abundance of the total bacteria and fungi and the expression of genes involved in nitrogen cycling...
November 15, 2017: Science of the Total Environment
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