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https://www.readbyqxmd.com/read/27913871/n2o-emission-characteristics-and-its-affecting-factors-in-rain-fed-potato-fields-in-wuchuan-county-china
#1
Liwei Wang, Cheng Wang, Zhihua Pan, Hui Xu, Lin Gao, Peiyi Zhao, Zhiqiang Dong, Jingting Zhang, Guohui Cui, Sen Wang, Guolin Han, Hui Zhao
Representing an important greenhouse gas, nitrous oxide (N2O) emission from cultivated land is a hot topic in current climate change research. This study examined the influences of nitrogen fertilisation, temperature and soil moisture on the ammonia monooxygenase subunit A (amoA) gene copy numbers and N2O emission characteristics. The experimental observation of N2O fluxes was based on the static chamber-gas chromatographic method. The ammonia-oxidising bacteria (AOB) and ammonia-oxidising archaea (AOA) gene copy numbers in different periods were measured by real-time polymerase chain reaction (PCR)...
December 3, 2016: International Journal of Biometeorology
https://www.readbyqxmd.com/read/27901279/dopamine-agonists-for-preventing-ovarian-hyperstimulation-syndrome
#2
REVIEW
Huilin Tang, Selma Mourad, Suo-Di Zhai, Roger J Hart
BACKGROUND: Ovarian hyperstimulation syndrome (OHSS) is a potentially serious complication of ovarian stimulation in assisted reproduction technology (ART). It is characterised by enlarged ovaries and an acute fluid shift from the intravascular space to the third space, resulting in bloating, increased risk of venous thromboembolism and decreased organ perfusion. Most cases are mild, but forms of moderate or severe OHSS appear in 3% to 8% of in vitro fertilisation (IVF) cycles. The dopamine agonist cabergoline was introduced as a secondary prevention intervention for OHSS in women at high risk of OHSS undergoing ART treatment...
November 30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27894932/microbial-stress-from-molecules-to-systems-sitges-november-2015
#3
Francesca Martani, Nadia Maria Berterame, Paola Branduardi
The meeting "Microbial Stress: from Molecules to Systems" - the third in this series - was held in Sitges (Spain) in November 2015. The meeting offered the opportunity for international scientists to share their viewpoints and recent outcomes concerning microbial stress responses. Particular attention was given to the characterisation of mechanisms triggered by stress, from detailed molecular biology through whole organism systems biology up to the level of populations. A deeper understanding of microbial responses to stress is indeed attainable only considering the phenomenon as a whole...
November 25, 2016: New Biotechnology
https://www.readbyqxmd.com/read/27894513/complement-in-the-fundamental-processes-of-the-cell
#4
Owen A Hawksworth, Liam G Coulthard, Trent M Woodruff
Once regarded solely as an activator of innate immunity, it is now clear that the complement system acts in an assortment of cells and tissues, with immunity only one facet of a diverse array of functions under the influence of the complement proteins. Throughout development, complement activity has now been demonstrated from early sperm-egg interactions in fertilisation, to regulation of epiboly and organogenesis, and later in refinement of cerebral synapses. Complement has also been shown to regulate homeostasis of adult tissues, controlling cell processes such as migration, survival, repair, and regeneration...
November 25, 2016: Molecular Immunology
https://www.readbyqxmd.com/read/27890866/claims-for-fertility-interventions-a-systematic-assessment-of-statements-on-uk-fertility-centre-websites
#5
E A Spencer, K R Mahtani, B Goldacre, C Heneghan
OBJECTIVES: Fertility services in the UK are offered by over 200 Human Fertilisation and Embryology Authority (HFEA)-registered NHS and private clinics. While in vitro fertilisation (IVF) and intracytoplasmic sperm injection (ICSI) form part of the National Institute for Health and Care Excellence (NICE) guidance, many further interventions are offered. We aimed to record claims of benefit for interventions offered by fertility centres via information on the centres' websites and record what evidence was cited for these claims...
November 27, 2016: BMJ Open
https://www.readbyqxmd.com/read/27888061/secretory-function-of-ovarian-cells-and-myometrial-contractions-in-cow-are-affected-by-chlorinated-insecticides-chlordane-heptachlor-mirex-in-vitro
#6
Michael Hubert Wrobel, Jaroslaw Mlynarczuk
The aim of the study was to investigate the effect of chlordane, heptachlor and mirex, on hormonal regulation of the force of myometrial contractions. Myometrial, endometrial, granulosa and luteal cells as well as strips of myometrium from non-pregnant cows were incubated with three insecticides at environmentally relevant doses (0.1, 1 or 10ng/ml). None of the insecticides affected the viability of studied cells. Chlordane stimulated, while heptachlor and mirex inhibited, secretion of testosterone and estradiol from granulosa cells as well as secretion of progesterone from luteal cells, respectively...
November 22, 2016: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/27884883/bilateral-ureteric-obstruction-during-in-vitro-fertilisation-therapy-in-a-patient-with-complex-surgically-managed-crohn-s-disease
#7
Christopher Charles Khoo, Nikhil Ahluwalia, Jan Grace, Arun Sahai
A 37-year-old woman receiving in vitro fertilisation (IVF) treatment presented with lethargy, fevers and anuria. Her background included complex surgically managed Crohn's disease and mild right-sided hydronephrosis (with no evidence of obstruction on MAG3 renogram). On examination, she had a distended abdomen with generalised tenderness. Blood tests revealed an acute kidney injury and confirmed sepsis. She was found to have bilateral ureteric obstruction with worsening of the right-sided hydronephrosis and new-onset left-sided hydronephrosis secondary to bilateral ovarian masses, diagnosed as mild ovarian hyperstimulation syndrome (OHSS)...
November 24, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27883175/heads-you-win-tails-you-lose-filtration-processing-for-the-microscopical-examination-of-sperm-heads
#8
I A Brewis, M A Watkinson, C J VON Ruhland
The sperm head plays a key role in many fertilisation events and determining the precise location of molecules within the head region is important in mechanistically dissecting the fertilisation process. Such molecules may be present in low copy number and many sperm head profiles must be examined to localise them to particular subcellular structures with confidence. Filtration has traditionally been used for the purpose of concentrating biological material, such as free-living cells, spores, and subcellular fractions, and little attempt has been made to extend the procedure to encompass the entire processing schedule, mainly due to the incompatibility of intermediate dehydrating solvents with membrane filters...
November 24, 2016: Journal of Microscopy
https://www.readbyqxmd.com/read/27882628/the-influence-of-testicular-microlithiasis-on-the-outcomes-of-in-vitro-fertilisation-in-a-chinese-han-population
#9
C Xu, F-F Zhang, H-L Yang, G Ma, B Zhang, K-J Li, T-J Zhang, J-L Liu, X-J Xuan
To investigate the influence of testicular microlithiasis (TM) on the outcomes of in vitro fertilisation (IVF), we retrospectively reviewed the ultrasonography results of the TM patients who underwent IVF treatment in our hospital. They were classified as classic-TM (CTM) or limited-TM (LTM) comparing with patients without TM (Non-TM). Semen parameters, rates of fertilisation, normal fertilisation, good embryos and clinical pregnancy were analysed. The Non-TM group showed higher percentage of morphologically normal spermatozoa than the CTM or LTM group (4...
November 23, 2016: Andrologia
https://www.readbyqxmd.com/read/27873107/assessment-of-potential-impacts-of-climate-change-on-agricultural-development-in-the-lower-benue-river-basin
#10
Roland Clement Abah, Brilliant Mareme Petja
Agriculture in the Lower Benue River Basin faces several challenges which threaten the future of agricultural development. This study was an assessment of potential impacts of climate change on agricultural development in the Lower Benue River Basin. Through analysis of physical and socioeconomic parameters, the study adapted an impact assessment model to rank potential impacts on agricultural development in the study area. Rainfall intensity seemed to be increasing with a gradual reduction in the number of rainy days...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27863773/simulating-the-environmental-performance-of-post-harvest-management-measures-to-comply-with-the-eu-nitrates-directive
#11
J De Waele, K D'Haene, J Salomez, G Hofman, S De Neve
Nitrate (NO3(-)) leaching from farmland remains the predominant source of nitrogen (N) loads to European ground- and surface water. As soil mineral N content at harvest is often high and may increase by mineralisation from crop residues and soil organic matter, it is critical to understand which post-harvest management measures can be taken to restrict the average NO3(-) concentration in ground- and surface waters below the norm of 50 mg l(-1). Nitrate leaching was simulated with the EU-rotate_N model on a silty and a sandy soil following the five main arable crops cultivated in Flanders: cut grassland, silage maize, potatoes, sugar beets and winter wheat, in scenarios of optimum fertilisation with and without post-harvest measures...
November 15, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27858981/a-multi-isotope-investigation-of-diet-and-subsistence-amongst-island-and-mainland-populations-from-early-medieval-western-britain
#12
Katie A Hemer, Angela L Lamb, Carolyn A Chenery, Jane A Evans
OBJECTIVES: This is the first investigation of dietary practices amongst multiple early medieval populations (AD 500-1000) from Wales and the Isle of Man using carbon, nitrogen, and sulphur isotope analysis. The analysis will illuminate similarities or differences between the diets and subsistence strategies of populations occupying different geographical regions, specifically those living in marginal coastal regions in comparison to inland populations well-connected to ecclesiastical centres and high-status settlements...
November 17, 2016: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/27856983/one-vaccinology-overcoming-challenges-in-vaccine-development
#13
Camilla Benfield
How might translational vaccinology contribute to tackling some of the greatest global health challenges of modern times? Camilla Benfield, a lecturer in virology at the Royal Veterinary College, recently attended an international conference that considered this question and how some of the key barriers to the development and launch of new global health vaccines might be overcome. Here, she highlights areas where cross-fertilisation of ideas and techniques between veterinary and human fields could have mutual benefit...
November 19, 2016: Veterinary Record
https://www.readbyqxmd.com/read/27852632/predicting-the-chances-of-a-live-birth-after-one-or-more-complete-cycles-of-in-vitro-fertilisation-population-based-study-of-linked-cycle-data-from-113%C3%A2-873-women
#14
David J McLernon, Ewout W Steyerberg, Egbert R Te Velde, Amanda J Lee, Siladitya Bhattacharya
OBJECTIVE:  To develop a prediction model to estimate the chances of a live birth over multiple complete cycles of in vitro fertilisation (IVF) based on a couple's specific characteristics and treatment information. DESIGN:  Population based cohort study. SETTING:  All licensed IVF clinics in the UK. National data from the Human Fertilisation and Embryology Authority register. PARTICIPANTS:  All 253 417 women who started IVF (including intracytoplasmic sperm injection) treatment in the UK from 1999 to 2008 using their own eggs and partner's sperm...
November 16, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27852101/human-chorionic-gonadotrophin-priming-for-fertility-treatment-with-in-vitro-maturation
#15
REVIEW
Jane Reavey, Katy Vincent, Timothy Child, Ingrid E Granne
BACKGROUND: In vitro maturation (IVM) is a fertility treatment that involves the transvaginal retrieval of immature oocytes, and their subsequent maturation and fertilisation. Although the live birth rate is lower than conventional in vitro fertilisation (IVF) with ovarian stimulation, it is a useful treatment, as it avoids the risk of ovarian hyperstimulation syndrome (OHSS). Women with polycystic ovaries (PCO) or polycystic ovarian syndrome (PCOS) are at an increased risk of OHSS. Thus, IVM may be a more useful treatment in this patient group...
November 16, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27834862/internet-of-things-platform-for-smart-farming-experiences-and-lessons-learnt
#16
Prem Prakash Jayaraman, Ali Yavari, Dimitrios Georgakopoulos, Ahsan Morshed, Arkady Zaslavsky
Improving farm productivity is essential for increasing farm profitability and meeting the rapidly growing demand for food that is fuelled by rapid population growth across the world. Farm productivity can be increased by understanding and forecasting crop performance in a variety of environmental conditions. Crop recommendation is currently based on data collected in field-based agricultural studies that capture crop performance under a variety of conditions (e.g., soil quality and environmental conditions)...
November 9, 2016: Sensors
https://www.readbyqxmd.com/read/27824910/3d-finite-element-electrical-model-of-larval-zebrafish-ecg-signals
#17
James Crowcombe, Sundeep Singh Dhillon, Rhiannon Mary Hurst, Stuart Egginton, Ferenc Müller, Attila Sík, Edward Tarte
Assessment of heart function in zebrafish larvae using electrocardiography (ECG) is a potentially useful tool in developing cardiac treatments and the assessment of drug therapies. In order to better understand how a measured ECG waveform is related to the structure of the heart, its position within the larva and the position of the electrodes, a 3D model of a 3 days post fertilisation (dpf) larval zebrafish was developed to simulate cardiac electrical activity and investigate the voltage distribution throughout the body...
2016: PloS One
https://www.readbyqxmd.com/read/27823953/the-effect-of-gentamicin-on-sperm-motility-and-bacterial-abundance-during-chilled-sperm-storage-in-the-booroolong-frog
#18
Leesa M Keogh, Phillip G Byrne, Aimee J Silla
Antibiotics can inhibit bacterial contamination and extend sperm longevity during storage; a primary goal of captive facilities conducting biobanking and artificial fertilisation (AF). This study evaluated the effects of gentamicin on the short-term storage of Booroolong frog sperm. Sperm suspensions were obtained via either testis maceration, or as spermic urine, following hormonal induction of sperm-release. The effect of 0, 1, 2, 3 or 4mgmL(-1) gentamicin on bacterial abundance (CFUmL(-1)) was determined and sperm motility assessed...
November 5, 2016: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27823824/invasion-of-the-brazilian-campo-rupestre-by-the-exotic-grass-melinis-minutiflora-is-driven-by-the-high-soil-n-availability-and-changes-in-the-n-cycle
#19
Pâmella C D Ribeiro, Esther Menendez, Danielle L da Silva, Douglas Bonieck, Martha Helena Ramírez-Bahena, Maria Aparecida Resende-Stoianoff, Alvaro Peix, Encarna Velázquez, Pedro F Mateos, Maria Rita Scotti
The Serra do Rola Moça State Park (PESRM) in Minas Gerais State, Brazil is a preserved site representative of the campo rupestre biome over an ironstone outcrop that has a high level of plant diversity. Almost 60% of this grassy field has been invaded by the exotic molasses grass (Melinis minutiflora), which constitutes a severe threat to the biodiversity and survival of this biome, particularly due to the impacts of annual fires and inappropriate restoration interventions. Many invasive species exhibit a high demand for nitrogen (N)...
January 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27816925/a-short-course-of-metformin-does-not-reduce-ohss-in-a-gnrh-antagonist-cycle-for-women-with-pcos-undergoing-ivf-a-randomised-placebo-controlled-trial
#20
S L Jacob, C Brewer, T Tang, H M Picton, J H Barth, A H Balen
STUDY QUESTION: Does 'metformin' reduce the incidence of ovarian hyperstimulation syndrome (OHSS) for women with polycystic ovary syndrome (PCOS) undergoing a GnRH antagonist assisted conception treatment cycle? SUMMARY ANSWER: A short course of metformin does not reduce the incidence of OHSS for women with PCOS undergoing a GnRH antagonist treatment cycle. WHAT IS KNOWN ALREADY: Metformin does reduce the incidence of OHSS in a GnRH-agonist treatment cycle...
November 5, 2016: Human Reproduction
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