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https://www.readbyqxmd.com/read/28925338/foraging-behaviour-of-the-exotic-wasp-vespula-germanica-hymenoptera-vespidae-on-a-native-caterpillar-defoliator
#1
A L Pietrantuono, S Moreyra, M Lozada
Vespula germanica is a social wasp and an opportunistic predator. While foraging, these wasps learn and integrate different kinds of cues. They have successfully invaded many parts of the world, including native Nothofagus and Lophozonia forests located in the Andean-Patagonian region, where they forage on native arthropods. Perzelia arda, a lepidopteron defoliator of Lophozonia obliqua, uses the foliage to hide in and feed on. The purpose of this work is to study whether V. germanica use olfactory cues when foraging on P...
September 19, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28922144/short-term-hypoxia-and-vasa-recta-function-in-kidney-slices
#2
D Braun, S Dietze, T M J Pahlitzsch, I C Wennysia, P B Persson, M Ludwig, A Patzak
BACKGROUND: Vasa recta (VR) supply the inner part of outer renal medulla an area at risk for hypoxic damages. OBJECTIVE: We hypothesize increased vasoreactivity after hypoxia/re-oxygenation (H/R) in VR, which might contribute to the reduced medullary perfusion after an ischemic event. METHODS: Live kidney slices (200μm) from SD rats were used for functional experiments. TUNEL assay and H&E staining were used to estimate slice viability. Kidney slices were treated with carbogen or hypoxia (1% O2) for 60 or 90 min and vasoreactivity to Ang II (10-7 M) was recorded by DIC microscopy after re-oxygenation with carbogen...
September 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28920090/reconstructing-coral-calcification-fluid-dissolved-inorganic-carbon-chemistry-from-skeletal-boron-an-exploration-of-potential-controls-on-coral-aragonite-b-ca
#3
Nicola Allison
The boron geochemistry of coral skeletons reflects the dissolved inorganic carbon (DIC) chemistry of the calcification fluid from which the skeletons precipitates and may be a valuable tool to investigate the effects of climate change on coral calcification. In this paper I calculate the predicted B/Ca of aragonite precipitating from seawater based fluids as a function of pH, [DIC] and [Ca(2+)]. I consider how different co-precipitating DIC species affect aragonite B/Ca and also estimate the impact of variations in the B(OH)4(-)/co-precipitating DIC aragonite partition coefficient (KD), which may be associated with changes in the DIC and Ca(2+) chemistry of the calcification fluid...
August 2017: Heliyon
https://www.readbyqxmd.com/read/28919927/characterization-of-a-heat-tolerant-chlorella-sp-gd-mutant-with-enhanced-photosynthetic-co2-fixation-efficiency-and-its-implication-as-lactic-acid-fermentation-feedstock
#4
Tse-Min Lee, Yu-Fei Tseng, Chieh-Lun Cheng, Yi-Chuan Chen, Chih-Sheng Lin, Hsiang-Yen Su, Te-Jin Chow, Chun-Yen Chen, Jo-Shu Chang
BACKGROUND: Fermentative production of lactic acid from algae-based carbohydrates devoid of lignin has attracted great attention for its potential as a suitable alternative substrate compared to lignocellulosic biomass. RESULTS: A Chlorella sp. GD mutant with enhanced thermo-tolerance was obtained by mutagenesis using N-methyl-N'-nitro-N-nitrosoguanidine to overcome outdoor high-temperature inhibition and it was used as a feedstock for fermentative lactic acid production...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28903553/monitoring-microbial-mineralization-using-reverse-stable-isotope-labelling-analysis-by-mid-infrared-laser-spectroscopy
#5
Xiyang Dong, Maik A Jochmann, Martin Elsner, Armin H Meyer, Leonard E Bäcker, Mona Rahmatullah, Daniel Schunk, Guido Lens, Rainer Udo Meckenstock
Assessing the biodegradation of organic compounds is a frequent question in environmental science. Here, we present a sensitive, inexpensive, and simple approach to monitor microbial mineralization using reverse stable isotope labelling analysis (RIL) of dissolved inorganic carbon (DIC). The medium for the biodegradation assay contains regular organic compounds and (13)C-labelled DIC with (13)C atom fractions (x((13)C)DIC) higher than natural abundance (typically 2-50%). The produced CO2 (x((13)C) ≈ 1.11%) gradually dilutes the initial x((13)C)DIC allowing to quantify microbial mineralization using mass-balance calculations...
September 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28901052/noninvasive-three-dimensional-full-field-body-sensor-for-surface-deformation-monitoring-of-human-body-in-vivo
#6
Zhenning Chen, Xinxing Shao, Xiaoyuan He, Jialin Wu, Xiangyang Xu, Jinlin Zhang
Noninvasive, three-dimensional (3-D), full-field surface deformation measurements of the human body are important for biomedical investigations. We proposed a 3-D noninvasive, full-field body sensor based on stereo digital image correlation (stereo-DIC) for surface deformation monitoring of the human body in vivo. First, by applying an improved water-transfer printing (WTP) technique to transfer optimized speckle patterns onto the skin, the body sensor was conveniently and harmlessly fabricated directly onto the human body...
September 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28899749/cyp4a-cyp2c-modulation-of-the-interaction-of-calcium-channel-blockers-with-cyclosporine-on-edhf-mediated-renal-vasodilations-in-rats
#7
Safaa H Hammoud, Amal G Omar, Assaad A Eid, Mahmoud M El-Mas
The endothelium-derived hyperpolarizing factor (EDHF) serves as a back-up mechanism that compensates for reduced nitric oxide (NO)/prostanoids bioavailability. Here we investigated whether (i) under conditions of vascular endothelium dysfunction, the immunosuppressant drug cyclosporine (CSA) upregulates EDHF-dependent renal vasodilations through altering CYP4A/CYP2C signaling, and (ii) calcium channel blockers modulate the CSA/EDHF/CYP interaction. Rats were treated with CSA, verapamil, nifedipine, or their combinations for 7days...
September 9, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28890485/platinum-coated-core-shell-gold-nanorods-as-multifunctional-orientation-sensors-in-differential-interference-contrast-microscopy
#8
Geun Wan Kim, Ji Won Ha
We characterized the optical properties of single platinum-coated core-shell gold nanorods (Pt-AuNRs) under dark-field (DF) and differential interference contrast (DIC) microscopy. Furthermore, we examined their potential use as multifunctional orientation probes. Longitudinal surface plasmon resonance damping was observed for single Pt-AuNRs due to Pt metals coated on the AuNR surface under single-particle scattering spectroscopy. Despite the strong plasmon damping with a much-decreased scattering intensity, DIC microscopy allowed us to detect single Pt-AuNRs with much higher sensitivity...
2017: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/28888428/displacement-comparison-of-cad-cam-titanium-and-zirconia-abutments-to-implants-with-different-conical-connections
#9
Burak Yilmaz, Shervin Hashemzadeh, Jeremy D Seidt, Nancy L Clelland
PURPOSE: To compare the displacements of CAD-CAM zirconia and titanium abutments into different internal connection systems after torquing. METHODS: OsseoSpeed EV and OsseoSpeed TX implants (n=10) were placed in resin blocks. Zirconia and titanium abutments (n=5) were first hand tightened and then tightened to the recommended torque (20Ncm for TX and 25Ncm for EV). Displacements of abutments between screw tightening by hand and torque driver was measured using three-dimensional digital image correlation (3D DIC) technique...
September 6, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28888130/chiral-supramolecular-order-revealed-during-the-formation-of-calf-thymus-and-phage-dna-crystals
#10
Benedicto de Campos Vidal, Maria Luiza S Mello
The control of DNA packaging has been reported to be dependent on an ordered liquid-crystalline state. However, the textural characteristics that are typical of crystals and that resemble mesophases have not been reported for highly polymerized or even shorter types of DNA filaments under in vitro conditions that favor crystallization. Because DNA crystals are expected to exhibit particular textural optical anisotropies, pure and highly polymerized calf thymus DNA and simpler λ phage DNA were crystallized from solution drops and were analyzed using high-performance polarization microscopy with and without differential interference contrast (DIC) optics...
September 1, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28886373/global-strain-field-mapping-of-a-particle-laden-interface-using-digital-image-correlation
#11
S R Vora, B Bognet, H S Patanwala, C D Young, S-Y Chang, V Daux, A W K Ma
HYPOTHESIS: The ability to identify the stress-strain relations correctly is critical to understanding and modeling any rheological responses of an interface. Langmuir-Pockels (LP) trough is one of the most commonly used tools for studying an interface. Most, if not all, existing studies assume a 1D uniaxial compression during a LP-trough compression experiment. It is hypothesized that the deformation field is far more complex than what is typically assumed. EXPERIMENTS: To examine this hypothesis, we custom-built a glass-bottomed LP trough equipped with a camera to capture a series of optical images asa carbon nanotube (CNT)-laden interface is compressed...
September 1, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28884611/an-evaluation-of-the-activated-partial-thromboplastin-time-waveform
#12
Takeshi Matsumoto, Hideo Wada, Naoki Fujimoto, Junki Toyoda, Yasunori Abe, Kohshi Ohishi, Yoshiki Yamashita, Makoto Ikejiri, Kei Hasegawa, Kei Suzuki, Hiroshi Imai, Kaname Nakatani, Naoyuki Katayama
The activated partial thromboplastin time (APTT) waveform includes several parameters that are related to various underlying diseases. The APTT waveform was examined in various diseases. Regarding the pattern of APTT waveform, a biphasic pattern of the first or second derivative curve (DC) was observed in patients with hemophilia and patients positive for antiphospholipid (aPL) antibodies or coagulation factor VIII (FVIII) inhibitors. The time of the first and second DC and fibrin formation at 1/2 height were prolonged in patients with hemophilia, patients with inhibitors, patients positive for aPL, patients treated with anti-Xa agents, and patients with disseminated intravascular coagulation (DIC)...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28878110/estimation-of-intravenous-drug-users-population-in-kermanshah-city-west-of-iran-in-2016-using-capture-recapture-method
#13
Forod Azhdar, Nader Esmaeilnasab, Ghobad Moradi, Daem Roshani, Ebrahim Ghaderi, Bijan Nori
BACKGROUND: Drug abuse, particularly intravenous drug use, is one of the most common challenges in human communities so that its negative impact on economic and cultural conditions of society and physical as well as mental health of individuals is evident. We aimed to estimate the IDUs' population in Kermanshah City, West of Iran using Capture-recapture method. STUDY DESIGN: A Cross-sectional study. METHODS: The data in this study were collected from three different sources: Drop in Centers (DICs), Out Reach Teams (ORTs) and Methadone Maintenance Treatment centers (MMTs) in Kermanshah City from Mar 2015 until Mar 2016, and then indirect Capture-recapture was used to estimate the IDUs' population...
August 7, 2017: Journal of Research in Health Sciences
https://www.readbyqxmd.com/read/28872817/carboplatin-loaded-raman-encoded-chitosan-coated-silver-nanotriangles-as-multimodal-traceable-nanotherapeutic-delivery-systems-and-ph-reporters-inside-human-ovarian-cancer-cells
#14
Monica Potara, Timea Nagy-Simon, Ana Maria Craciun, Sorina Suarasan, Emilia Licarete, Florica Imre-Lucaci, Simion Astilean
Ovarian cancer is a common cause of cancer death in women and is associated with the highest mortality rates of all gynecological malignancies. Carboplatin (CBP) is the most used cytotoxic agent in the treatment of ovarian cancer. Herein, we design and assess a CBP nanotherapeutic delivery system which allows combinatorial functionalities of chemotherapy, pH sensing, and multimodal traceable properties inside live NIH:OVCAR-3 ovarian cancer cells. In our design, a pH-sensitive Raman reporter, 4-mercaptobenzoic acid (4MBA) is anchored onto the surface of chitosan-coated silver nanotriangles (chit-AgNTs) to generate a robust surface-enhanced Raman scattering (SERS) traceable system...
September 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28870933/clinicopathological-features-of-ductal-carcinoma-in-situ-from-18-f-fdg-pet-findings
#15
Takaaki Fujii, Keiko Yanai, Shoko Tokuda, Yuko Nakazawa, Sasagu Kurozumi, Sayaka Obayashi, Reina Yajima, Tomoko Hirakata, Hiroyuki Kuwano
AIM: The presence of ductal carcinoma in situ (DCIS) can increase the risk of developing an invasive ductal carcinoma (IDC), but it is difficult to predict what will occur if a DCIS is left untreated. We reported the usefulness of (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET) for DCIS, and that the presence of FDG uptake in the tumor could be considered a predictor of invasive potential in patients with DCIS. In this study, we retrospectively evaluated the clinicopathological features of DCIS by using FDG-PET findings, and we evaluated the possibility of using FDG-PET in DCIS cases as a biomarker of which lesions will go on to become invasive...
September 2017: Anticancer Research
https://www.readbyqxmd.com/read/28869523/an-optimum-specimen-geometry-for-equibiaxial-experimental-tests-of-reinforced-magnetorheological-elastomers-with-iron-micro-and-nanoparticles
#16
Luis Manuel Palacios-Pineda, Imperio Anel Perales-Martínez, Mario Regino Moreno-Guerra, Alex Elías-Zúñiga
The aim of this paper focused on obtaining the optimum cruciform geometry of reinforced magnetorheological elastomers (MRE) to perform homogeneous equibiaxial deformation tests, by using optimization algorithms and Finite Element Method (FEM) simulations. To validate the proposed specimen geometry, a digital image correlation (DIC) system was used to compare experimental result measurements with respect to those of FEM simulations. Moreover, and based on the optimum cruciform geometry, specimens produced from MRE reinforced with carbonyl-iron microparticles or iron nanoparticles were subjected to equibiaxial loading and unloading cycles to examine their Mullin's effect and their residual strain deformations...
September 3, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28867150/-consensus-on-perioperative-transesophageal-echocardiography-of-the-brazilian-society-of-anesthesiology-etti-sba-and-the-department-of-cardiovascular-image-of-the-brazilian-society-of-cardiology-dic-sbc
#17
Marcello Fonseca Salgado-Filho, Samira Saady Morhy, Henrique Doria de Vasconcelos, Eric Benedet Lineburger, Fabio de Vasconcelos Papa, Eduardo Souza Leal Botelho, Marcelo Ramalho Fernandes, Maurício Daher, David Le Bihan, Chiara Scaglioni Tessmer Gatto, Cláudio Henrique Fischer, Alexander Alves da Silva, Carlos Galhardo Júnior, Carolina Baeta Neves, Alexandre Fernandes, Marcelo Luiz Campos Vieira
Through the Life Cycle of Intraoperative Transesophageal Echocardiography (ETTI/SBA) the Brazilian Society of Anesthesiology, together with the Department of Cardiovascular Image of the Brazilian Society of Cardiology (DIC/SBC), createded a task force to standardize the use of intraoperative transesophageal echocardiography by Brazilian anesthesiologists and echocardiographers based on scientific evidence from the Society of Cardiovascular Anesthesiologists/American Society of Echocardiography (SCA/ASE) and the Brazilian Society of Cardiology...
August 31, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28866873/carbon-isotope-fractionation-by-anoxygenic-phototrophic-bacteria-in-euxinic-lake-cadagno
#18
N R Posth, L A Bristow, R P Cox, K S Habicht, F Danza, M Tonolla, N-U Frigaard, D E Canfield
Anoxygenic phototrophic bacteria utilize ancient metabolic pathways to link sulfur and iron metabolism to the reduction of CO2 . In meromictic Lake Cadagno, Switzerland, both purple sulfur (PSB) and green sulfur anoxygenic phototrophic bacteria (GSB) dominate the chemocline community and drive the sulfur cycle. PSB and GSB fix carbon utilizing different enzymatic pathways and these fractionate C-isotopes to different extents. Here, these differences in C-isotope fractionation are used to constrain the relative input of various anoxygenic phototrophs to the bulk community C-isotope signal in the chemocline...
September 3, 2017: Geobiology
https://www.readbyqxmd.com/read/28866239/an-evaluation-of-soil-chemistry-in-human-cadaver-decomposition-islands-potential-for-estimating-postmortem-interval-pmi
#19
J P Fancher, J A Aitkenhead-Peterson, T Farris, K Mix, A P Schwab, D J Wescott, M D Hamilton
Soil samples from the Forensic Anthropology Research Facility (FARF) at Texas State University, San Marcos, TX, were analyzed for multiple soil characteristics from cadaver decomposition islands to a depth of 5centimeters (cm) from 63 human decomposition sites, as well as depths up to 15cm in a subset of 11 of the cadaver decomposition islands plus control soils. Postmortem interval (PMI) of the cadaver decomposition islands ranged from 6 to 1752 days. Some soil chemistry, including nitrate-N (NO3-N), ammonium-N (NH4-N), and dissolved inorganic carbon (DIC), peaked at early PMI values and their concentrations at 0-5cm returned to near control values over time likely due to translocation down the soil profile...
August 18, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28846826/autoimmune-heparin-induced-thrombocytopenia
#20
REVIEW
A Greinacher, Kathleen Selleng, T E Warkentin
Autoimmune heparin-induced thrombocytopenia (aHIT) indicates patients with anti-PF4/polyanion antibodies that are able to activate platelets strongly even in the absence of heparin (heparin-independent platelet activation). Nevertheless, as seen with serum obtained from patients with otherwise typical HIT, serum-induced platelet activation is inhibited at high heparin concentrations (10-100 IU/mL heparin). Further, upon serial dilution, aHIT serum will usually exhibit heparin-dependent platelet activation. Clinical syndromes associated with aHIT include: delayed-onset HIT, persisting HIT, spontaneous HIT, fondaparinux-associated HIT, heparin "flush"-induced HIT, and severe HIT (platelet count <20×10(9) /L) with associated disseminated intravascular coagulation (DIC)...
August 28, 2017: Journal of Thrombosis and Haemostasis: JTH
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