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Nitrogen-cycling gene pool shrunk by species interactions among denser bacterial and archaeal community stimulated by excess organic matter and total nitrogen in a eutrophic bay.

Mar Environ Res 2021 Jun 17;169:105397. Epub 2021 Jun 17.

College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China. Electronic address:

Microbial densities, functional genes, and their responses to environment factors have been studied for years, but still a lot remains unknown about their interactions with each other. In this study, the abundances of 7 nitrogen cycling genes in the sediments from Hangzhou Bay were analyzed along with bacterial and archaeal 16S rRNA abundances as the biomarkers of their densities. The amount of organic matter (OM) and total nitrogen (TN) strongly positively correlated with each other and microbial densities, while total phosphate (TP) and ammonia-nitrogen (NH-N) did not. Read More

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Comparison of Various Time-Related Modifications of Ultraviolet Photofunctionalization on SLA-Treated Titanium Surfaces.

Int J Oral Maxillofac Implants 2021 Jun 22. Epub 2021 Jun 22.

Purpose: The purpose of this study was to compare changes in the physicochemical and biologic characteristics of titanium surfaces through short-term re-hydrophobization for 24 hours and ultraviolet (UV) re-irradiation for 24 hours.

Materials And Methods: Photofunctionalization was performed with four 15-W bactericidal lamps at an intensity of 5.0 mW/cm (wavelength = 254 ± 20 nm) on sandblasted, large-grit, acid-etched (SLA)-treated titanium surfaces, which were stored in a sterilized sealed container for 8 weeks to allow enough biologic aging. Read More

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Association between dietary protein intake and skeletal muscle mass in older Korean adults.

Eur Geriatr Med 2021 Jun 22. Epub 2021 Jun 22.

Department of Family Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, 93, Jungbu-daero, Paldal-gu, Suwon, Gyeonggi, 16247, Republic of Korea.

Purpose: We investigated the association of low and high daily protein intakes on skeletal muscle mass status in Korean adults aged 60 years and older.

Methods: This cross-sectional study used data from the Korean National Health and Nutrition Examination Survey conducted between 2008 and 2011. The participants' dietary protein intake was assessed using the 24-h dietary recall method and was classified as low (< 0. Read More

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Long-term course of bronchial inflammation and pulmonary function testing in children with post-infectious bronchiolitis obliterans.

Pediatr Pulmonol 2021 Jun 22. Epub 2021 Jun 22.

Division of Allergy, Pulmonology and Cystic fibrosis, Department for Children and Adolescents, University Hospital, Frankfurt.

Rationale: Post-infectious bronchiolitis obliterans (PIBO) is a rare, chronic respiratory condition, which follows an acute insult due to a severe infection of the lower airways.

Objectives: The objective of this study was to investigate the long-term course of bronchial inflammation and pulmonary function testing in children with PIBO.

Methods: Medical charts of 21 children with PIBO were analyzed retrospectively at the Children's University Hospital Frankfurt/Main Germany. Read More

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Intraoperative blood volume loss according to gestational age at delivery among pregnant women with placenta accreta spectrum (PAS): an 11-year experience in Songklanagarind Hospital.

J Obstet Gynaecol 2021 Jun 22:1-6. Epub 2021 Jun 22.

Department of Obstetrics and Gynecology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand.

A retrospective study was conducted to evaluate the intraoperative blood volume loss in pregnant women with PAS according to gestational age at delivery. A total of 116 women were enrolled, 39 (33.6%) had an intraoperative massive blood loss (>5000 ml). Read More

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Follicular Fluid Zinc Level and Oocyte Maturity and Embryo Quality in Women with Polycystic Ovary Syndrome.

Int J Fertil Steril 2021 Jul 22;15(3):197-201. Epub 2021 Jun 22.

Department of Histology, School of Medicine, Research and Clinical Center for Infertility, Dezful University of Medical Sciences, Dezful, Iran. Email:

Background: Polycystic ovary syndrome (PCOS) is considered to be one of the most common endocrine disorders in women of reproductive age. Zinc, a vital trace element in the body, plays a key role in maintaining health, especially due to its antioxidant role. On the other hand, lack of antioxidants and oxidative stress can adversely affect oocytes quality and consequently fertility rate. Read More

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P-MRS of healthy human brain: Measurement of guanosine diphosphate mannose at 7 T.

NMR Biomed 2021 Jun 21:e4576. Epub 2021 Jun 21.

Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA.

Guanosine diphosphate mannose (GDP-Man) is the donor substrate required for mannosylation in the synthesis of glycoproteins, glycolipids and the newly discovered glycoRNA. Normal GDP-Man biosynthesis plays a crucial role in support of a variety of cellular functions, including cell recognition, cell communication and immune responses against viruses. Here, we report the detection of GDP-Man in human brain for the first time, using P MRS at 7 T. Read More

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A rational approach to basic equilibrium thermodynamics.

Authors:
Jarl B Rosenholm

Adv Colloid Interface Sci 2021 Jun 11;294:102433. Epub 2021 Jun 11.

Laboratory of Physical Chemistry, Åbo Akademi University, Porthansgatan 3-5, 20500 Åbo (Turku), Finland. Electronic address:

The elegance and general applicability of classical thermodynamics made a great impression on Albert Einstein as quoted: A theory is the more impressive the greater the simplicity of its premises, the more different kinds of things it relates and the more extended its area of applicability. Therefore the deep impression that classical thermodynamics made upon me. It is the only physical theory of universal content, which I am convinced will never be overthrown, within the framework of applicability of its basic concepts. Read More

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Benthic marine litter in the coastal zone of Bejaia (Algeria) as indicators of anthropogenic pollution.

Mar Pollut Bull 2021 Jun 18;170:112634. Epub 2021 Jun 18.

Laboratoire d'Ecologie et Environnement, Université Abderrahmane Mira de Bejaia, Faculté des Sciences de la Nature et de la Vie, Rue de l'Université, Targa-Ouzemour 06000 Bejaia, Algérie.

We studied the abundance of seafloor litter in the bay of Bejaia, Algeria, in order to better understand its sources and distribution and provide scientists with the technical basis for further monitoring and reduction measures. Data were collected during trawl surveys dedicated to fishing activity, between 40 and 200m. After each trawl, litter items were manually sorted and analyzed. Read More

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Spatial patterns and influencing factors of sewage treatment plants in the Guangdong-Hong Kong-Macau Greater Bay Area, China.

Sci Total Environ 2021 Jun 16;792:148430. Epub 2021 Jun 16.

Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Guangzhou 510006, PR China.

Over the past few years the discharge of waste and sewage in the Guangdong-Hong Kong-Macau Greater Bay Area (GHMB) of China has increased, exerting a great amount of pressure on ecological protection. In this study, we focus on achieving a balanced spatial layout of sewage treatment plants in order to reveal the regional differences and spatial patterns of sewage treatment plants in the GHMB and identify the key factors influencing the spatial patterns. In particular, we employ POI (point of interest) geographical data to evaluate the spatial patterns and agglomeration status of sewage treatment plants in the GHMB using Exploratory Spatial Data Analysis (ESDA). Read More

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Economy and carbon emissions optimization of different countries or areas in the world using an improved Attention mechanism based long short term memory neural network.

Sci Total Environ 2021 Jun 16;792:148444. Epub 2021 Jun 16.

College of Information Science & Technology, Beijing University of Chemical Technology, Beijing, China; Engineering Research Center of Intelligent PSE, Ministry of Education in China, Beijing, China. Electronic address:

The combustion of fossil fuels produces a large amount of carbon dioxide (CO), which leads to global warming in the world. How to rationally consume fossil energy and control CO emissions has become an unavoidable problem for human beings while vigorously developing economy. This paper proposes a novel economy and CO emissions prediction model using an improved Attention mechanism based long short term memory (LSTM) neural network (Attention-LSTM) to analyze and optimize the energy consumption structures in different countries or areas. Read More

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Effectiveness of pre-operative embolization in patients with spinal metastases: a systematic review and meta-analysis.

World Neurosurg 2021 Jun 18. Epub 2021 Jun 18.

Department of Orthopedic Surgery, Tianjin First Central Hospital, 300192, Tianjin, China. Electronic address:

Objective: Debate on effectiveness of the pre-operative embolization for spinal metastatic lesions, especially for non-hypervascular tumors, still persists. This study was aimed to identify the effectiveness of pre-operative embolization in patients operated for spinal metastasis.

Methods: Two authors independently retrieved the databases of PubMed, Embase, and CENTRAL, to identify eligible clinical studies comparing the outcome of patients operated for spinal metastatic disease with or without pre-operative embolization. Read More

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Novel strategy of cartilage repairing via application of P. atlantica with stem cells and collagen.

Artif Organs 2021 Jun 21. Epub 2021 Jun 21.

Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.

Background: Osteoarthritis (OA) is an inflammatory joint condition, still lacking effective treatments. Some factors consider as the main causes of OA, including biochemical, mechanical, and genetic factors. The growth of studies confirmed that modern medicine in combination with folk medicine regarding the arrival of reliable, efficient, and safe therapeutic products against OA. Read More

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Blood management in direct anterior versus posterior primary total hip arthroplasty using tranexamic acid: a matched cohort study.

Arch Orthop Trauma Surg 2021 Jun 21. Epub 2021 Jun 21.

Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.

Introduction: Proponents of the direct anterior approach (DAA) for THA claim patients recover faster compared to primary THA through the posterior approach (PA). Blood loss and transfusion have substantially declined with the use of tranexamic acid (TXA). However, it is still controversial if hemoglobin drops and transfusion rates are affected by the surgical approach when TXA is routinely used. Read More

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Increased Efficacy of Whole Lung Lavage Treatment in Alveolar Proteinosis Using a New Modified Lavage Technique.

J Bronchology Interv Pulmonol 2021 Jul;28(3):215-220

ILD Center of Excellence, Departments of Pulmonary Diseases.

Background: Autoimmune pulmonary alveolar proteinosis is an ultra-rare pulmonary disease. Whole lung lavage (WLL) is considered the gold standard therapy. We report a protocol for a new modified lavage technique (nMLT) in which controlled repetitive manual hyperinflation (MH) and intermittent chest percussion are used to enhance WLL efficacy. Read More

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Discerning the Metal Doping Effect on Surface Redox and Acidic Properties in a MoVTeNbO for Propa(e)ne Oxidation.

ACS Omega 2021 Jun 2;6(23):15279-15291. Epub 2021 Jun 2.

Instituto Mexicano del Petróleo, Dirección de Investigación en Transformación de Hidrocarburos, Eje Central Lázaro Cárdenas Norte 152, C.P. 07730 Ciudad de México, Mexico.

Adding a small quantity of K or Bi to a MoVTeNbO via impregnation with inorganic solutions modifies its surface acid and redox properties and its catalytic performance in propa(e)ne partial oxidation to acrylic acid (AA) without detriment to its pristine crystalline structure. Bi-doping encourages propane oxydehydrogenation to propene, thus enlarging the net production rate of AA up to 35% more. The easier propane activation/higher AA production over the Bi-doped catalyst is ascribed to its higher content of surface V leading to a larger amount of total V species, the isolation site effect of NbO species on V, and its higher Lewis acidity. Read More

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Distinguishing Adsorbed and Deposited Ionomers in the Catalyst Layer of Polymer Electrolyte Fuel Cells Using Contrast-Variation Small-Angle Neutron Scattering.

ACS Omega 2021 Jun 3;6(23):15257-15263. Epub 2021 Jun 3.

Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tokai, Ibaraki 319-1106, Japan.

The ionomers distributed on carbon particles in the catalyst layer of polymer electrolyte fuel cells (PEFCs) govern electrical power via proton transport and oxygen permeation to active platinum. Thus, ionomer distribution is a key to PEFC performance. This distribution is characterized by ionomer adsorption and deposition onto carbon during the catalyst-ink coating process; however, the adsorbed and deposited ionomers cannot easily be distinguished in the catalyst layer. Read More

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To evaluate the role of Feracrylum (1%) as hemostatic agent in Tonsillectomy.

Indian J Otolaryngol Head Neck Surg 2021 Jun 24;73(2):240-245. Epub 2021 Mar 24.

Department of ENT, Akash Institute of Medical Sciences and Research Centre, Devanahalli, Bengaluru, 562110 Karnataka India.

Tonsillectomy is a common procedure performed globally. It is associated with morbidities like hemorrhage and pain. Various methods are employed to reduce them. Read More

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Effect of Preoperative Duloxetine on Opioid Consumption in Women Undergoing Abdominal Hysterectomy: A Randomized, Double-Blinded, Placebo-Controlled Trial.

Anesth Pain Med 2020 Oct 22;10(5):e103729. Epub 2020 Aug 22.

Department of Anesthesiology, Pain, and Critical Care, Tehran University of Medical Sciences, Tehran, Iran.

Background: Pain is one of the most challenging issues following surgery, and it is crucial to provide adequate and appropriate pain control measures.

Objectives: This study assessed the efficacy of preoperative duloxetine in controlling postoperative pain in women following an abdominal hysterectomy in Yas Hospital affiliated to Tehran University of Medical Sciences between December 2019 and April 2020.

Methods: The study involved 80 women who were candidates for elective abdominal hysterectomy. Read More

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October 2020

Single Center Retrospective Analysis of Cost and Payments for Lymphatic Surgery.

Plast Reconstr Surg Glob Open 2021 Jun 16;9(6):e3630. Epub 2021 Jun 16.

Division of Plastic and Reconstructive Surgery, William Beaumont Hospital, Royal Oak, Mich.

Background: Insurance coverage for microsurgical lymphatic surgery continues to be sporadic, as the procedures continue to be labeled investigational. The objective of this study was to examine the typical payment patterns of our clinical practice for microsurgical lymphatic procedures.

Methods: We performed a single center, single surgeon retrospective case review for all lymphovenous bypass and vascularized lymph node transfer cases preformed from 2018 to 2020. Read More

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Estimating greenhouse emissions from sanitary landfills using Land-GEM and IPCC model based on realistic scenarios of different urban areas: a case study of Iran.

J Environ Health Sci Eng 2021 Jun 6;19(1):819-830. Epub 2021 May 6.

Khouzestan Department of Environment, Ahvaz, Iran.

This study examined the emission of greenhouse gases from municipal solid waste disposal centers in different regions of Iran based on different scenarios. Assuming landfill site opening in 2012 and considering the 20-year plan period for its usage, the amount of wastes entering the landfill site was calculated for 2012-2032. For calculating the production of methane (CH) and other gases during different years of the project, Land-GEM and IPCC model were used. Read More

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The effect of pantoprazole and somatostatin combined with thrombin in the treatment of non-esophagogastric varicosity upper gastrointestinal bleeding.

Am J Transl Res 2021 15;13(5):5484-5490. Epub 2021 May 15.

Department of Gastroenterology, The Third Hospital of Inner Mongolia Medical University (Inner Mongolia Baogang Hospital) Baotou 014010, Inner Mongolia Autonomous Region, China.

Objective: To explore the effect of pantoprazole and somatostatin combined with thrombin in the treatment of non-esophagogastric varicosity upper gastrointestinal bleeding (UGB) as well as its influence on serum hs-CRP and coagulation function.

Methods: From June 2016 to May 2018, patients with upper gastrointestinal hemorrhage due to non-esophagogastric varices in our hospital were selected as research subjects. After screening, they were randomly divided into the combined group (57 cases) and the control group (57 cases). Read More

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Analysis on the application value of goal-directed fluid therapy in patients undergoing laparoscopy-assisted radical gastrectomy with fast-track anesthesia.

Am J Transl Res 2021 15;13(5):5174-5182. Epub 2021 May 15.

Department of Anesthesiology, Zhuji People's Hospital Zhuji 311800, Zhejiang Province, China.

Objective: To explore the application value of goal-directed fluid therapy (GDFT) in patients undergoing laparoscopy-assisted radical gastrectomy with fast-track anesthesia.

Methods: From December 2016 to December 2019, 74 patients who underwent laparoscopy-assisted radical gastrectomy under the concept of enhanced recovery after surgery (ERAS) in gastrointestinal Surgery department of Tongling People's Hospital were selected as research participants. They were divided into two groups: the routine group (patients were treated with conventional fluids) (n=37) and the GDFT group (patients were treated with GDFT) (n=37). Read More

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Efficacy of intrauterine Bakri balloon tamponade combined with ascending uterine artery ligation on postpartum hemorrhage.

Am J Transl Res 2021 15;13(5):4995-5002. Epub 2021 May 15.

Department of Obstetrics, Tai'an City Central Hospital Tai'an 271000, Shandong Province, China.

Objective: To observe the efficacy of intrauterine Bakri balloon tamponade (IBBT) combined with ascending uterine artery ligation (AUAL) in the treatment of postpartum hemorrhage (PPH) due to uterine inertia after cesarean section.

Methods: A total of 92 patients with PPH due to uterine inertia after cesarean section were divided into a study group (n=46) and a control group (n=46) in accordance with the random number table. The control group was treated with IBBT alone, while the study group was treated with IBBT combined with AUAL. Read More

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Effects of PICCO in the guidance of goal-directed fluid therapy for gastrointestinal function after cytoreductive surgery for ovarian cancer.

Am J Transl Res 2021 15;13(5):4852-4859. Epub 2021 May 15.

Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China Hefei, Anhui Province, China.

Objective: To explore the effects of PICCO on the Guidance of Goal-Directed Fluid Therapy for gastrointestinal function after cytoreductive surgery for ovarian cancer.

Methods: A total of 98 patients who received cytoreductive surgery for ovarian cancer under general anesthesia in our hospital were stochastically divided into the observation group and control group, with 49 cases in each group. The observation group received PICCO guided goal-directed fluid therapy, while patients in the control group were treated with conventional fluid therapy. Read More

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An implementation study of periarticular knee osteotomy in the treatment of knee osteoarthritis.

Am J Transl Res 2021 15;13(5):4771-4779. Epub 2021 May 15.

Department of Anesthesiology, China Coast Guard Hospital of The People's Armed Police Force Jiaxing 314000, Zhejiang, China.

Objective: To analyze the clinical effects of periarticular knee osteotomy (PKO) in the treatment of knee osteoarthritis (KOA).

Methods: A total of 180 patients with KOA admitted to our hospital were selected as the study subjects, and were divided into study group (90 cases) and control group (90 cases) in accordance with different intervention measures. The study group was treated with PKO, while the control group was treated with joint replacement. Read More

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Student Loan Decision Making: Experience as an Anchor.

J Fam Econ Issues 2021 Jun 11:1-12. Epub 2021 Jun 11.

University of Florida, 1024 McCarty Hall D, Gainesville, FL 32611 USA.

The purpose of study is to examine the association between one's past borrowing experience and borrowing decisions in a hypothetical survey scenario. A total of 1928 responses from an online survey panel were analyzed, with a built-in anchoring question. Using the concept of anchoring bias as a reference point, survey participants were shown a hypothetical scenario regarding college attendance and asked two relevant questions: is it wise to attend college and how much student loans one should take out to attend college. Read More

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Keep me updated! Social support as a coping strategy to reduce the perceived threat caused by the cognitive availability of COVID-19 relevant information.

Curr Psychol 2021 Jun 16:1-16. Epub 2021 Jun 16.

Bergische Universität Wuppertal, Wuppertal, Germany.

The enormous amount of information about the COVID-19 pandemic in newspapers, TV channels, or social media reminds people every day of the potential threat the virus posed to their health and well-being in 2020. We examined if the cognitive availability of COVID-19 leads to the perception of heightened threat facilitating coping strategies and the moderating role of global self-efficacy and intolerance of uncertainty. A total of 235 participants randomly received either a newspaper article about the COVID-19 virus or Germany's soil condition and were asked to indicate their current level of the perceived threat of the virus and the use of different coping strategies. Read More

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Herbicide atrazine exposure induce oxidative stress, immune dysfunction and WSSV proliferation in red swamp crayfish Procambarus clarkii.

Chemosphere 2021 Jun 15;283:131227. Epub 2021 Jun 15.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

Atrazine is considered as a potential environmental endocrine disruptors and exhibits various toxic effects on animals. It has a great impact in the aquatic ecosystems, but there are few studies on its immunotoxicity in crustaceans. In the present study, the Procambarus clarkii were utilized to assess the immune toxicity after 0. Read More

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Validation of the promotion mechanism between bromide and UDMH to form NDMA during ozonation.

Sci Total Environ 2021 Jun 7;792:148316. Epub 2021 Jun 7.

Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Fujian 361021, China.

Unsymmetrical dimethylhydrazine (UDMH) is found to generate substantial carcinogenic nitroso-dimethylamine (NDMA) during ozonation, moreover, its formation is promoted by ubiquitous bromide ions (Br) in water matrixes, but the mechanism is still unclear. In this study, effects of Br on NDMA formation during ozonation of UDMH were studied, meanwhile, its promotion pathways were also determined. The results demonstrated that Br promoted NDMA formation from UDMH during ozonation, the formation rate constant with Br is over 7 times of that without Br. Read More

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