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https://www.readbyqxmd.com/read/28421312/an-annotated-translation-of-no%C3%A3-l-bernard-s-1899-article-on-the-germination-of-neottia-nidus-avis
#1
Marc-André Selosse, Julita Minasiewicz, Bernard Boullard
We translate Noël Bernard's discovery of orchid symbiotic germination discovered on Neottia nidus-avis, as published in the May 1899 issue of the Comptes rendus hebdomadaires des séances de l'Académie des sciences. In his note, Bernard (1874-1911) establishes the need for a fungus, which is also forming mycorrhizae in adults, for seeds germination. We provide illustrations reproduced from his later works, and summaries of the French text he cited. In our annotations, we show how early this discovery was done in Bernard's career, and insist on the scientific framework at the end of the nineteenth century, where orchid germination was mysterious and the need for vicinity of parents was not fully understood...
April 18, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28412621/xanthium-strumarium-l-seed-hull-as-a-zero-cost-alternative-for-rhodamine-b-dye-removal
#2
Shraddha Khamparia, Dipika Kaur Jaspal
Treatment of polluted water has been considered as one of the most important aspects in environmental sciences. Present study explores the decolorization potential of a low cost natural adsorbent Xanthium strumarium L. seed hull for the adsorption of a toxic xanthene dye, Rhodamine B (RHB). The characterization of the adsorbent revealed the presence of high amount of carbon, when exposed to Electron Dispersive Spectroscopy (EDS). Further appreciable decolorization took place which was confirmed by Fourier Transform Infrared Spectroscopy (FTIR) analysis noticing shift in peaks...
April 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28391819/automatic-gender-determination-from-3d-digital-maxillary-tooth-plaster-models-based-on-the-random-forest-algorithm-and-discrete-cosine-transform
#3
Betül Akkoç, Ahmet Arslan, Hatice Kök
BACKGROUND AND OBJECTIVE: One of the first stages in the identification of an individual is gender determination. Through gender determination, the search spectrum can be reduced. In disasters such as accidents or fires, which can render identification somewhat difficult, durable teeth are an important source for identification. This study proposes a smart system that can automatically determine gender using 3D digital maxillary tooth plaster models. METHODS: The study group was composed of 40 Turkish individuals (20 female, 20 male) between the ages of 21 and 24...
May 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28382337/physiochemical-properties-of-greatly-enhanced-photoluminescence-of-aqueous-dispersible-upconversion-caf2-yb-er-nanoparticles
#4
Anees A Ansari, Ranvijay Yadav, S B Rai
Crystal phase morphological structure and optical properties of the as-prepared upconversion CaF2:Yb/Er(core) and sequential coating of an inert crystalline material and silica layers surrounding the seed core-nanoparticles (NPs) were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED), optical absorption, FTIR spectroscopy and upconversion photoluminescence spectroscopy. Owing to the unique properties of CaF2 host matrix, we realized their practical applications in biomedical science to improve the upconversion luminescence property and aqueous dispersibility...
April 6, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28379982/measuring-the-mass-volume-and-density-of-microgram-sized-objects-in-fluid
#5
Shirin Mesbah Oskui, Heran C Bhakta, Graciel Diamante, Huinan Liu, Daniel Schlenk, William H Grover
Measurements of an object's fundamental physical properties like mass, volume, and density can offer valuable insights into the composition and state of the object. However, many important biological samples reside in a liquid environment where it is difficult to accurately measure their physical properties. We show that by using a simple piece of glass tubing and some inexpensive off-the-shelf electronics, we can create a sensor that can measure the mass, volume, and density of microgram-sized biological samples in their native liquid environment...
2017: PloS One
https://www.readbyqxmd.com/read/28370177/blood-safety-implications-of-donors-using-hiv-pre-exposure-prophylaxis
#6
C R Seed, H Yang, J F Lee
HIV pre-exposure prophylaxis (PrEP) is the use of one or more antiretroviral medications (in combination) to prevent HIV infection. The most commonly used PrEP medication (Truvada(®) , Gilead Sciences, Inc.) acts by inhibiting HIV-1 reverse transcriptase. If someone who is using PrEP unknowingly becomes HIV infected (termed 'PrEP breakthrough infection'), there may be suppressed viral replication resulting in a virus level undetectable by the most sensitive HIV NAT. Failure to seroconvert and seroreversion (loss of previously detectable HIV antibodies) have also both been observed with 2nd, 3rd and 4th generation screening immunoassays, as well as Western blot assays...
March 31, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28364714/enhancing-the-colloidal-stability-of-detonation-synthesized-diamond-particles-in-aqueous-solutions-by-adsorbing-organic-mono-bi-and-tridentate-molecules
#7
Tao Wang, Stephan Handschuh-Wang, Panpan Qin, Yang Yang, Xuechang Zhou, Yongbing Tang
Colloidal stability of nanoparticles with particle sizes smaller than 100nm is a critical issue for various research areas, including material science, electronics and biomedicine. We propose a facile, fast and cost-efficient method to increase the colloidal stability by simply adding organic molecules as ligands, which adsorb to the nanoparticle surface subsequently. Citric acid, oxalic acid, glutamic acid and propylamine were found to stabilize the nanodiamond (ND) particles with a mean diameter of approx...
March 25, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28336879/in-vitro-and-in-vivo-evaluation-of-a-three-dimensional-porous-multi-walled-carbon-nanotube-scaffold-for-bone-regeneration
#8
Manabu Tanaka, Yoshinori Sato, Mei Zhang, Hisao Haniu, Masanori Okamoto, Kaoru Aoki, Takashi Takizawa, Kazushige Yoshida, Atsushi Sobajima, Takayuki Kamanaka, Hiroyuki Kato, Naoto Saito
Carbon nanotubes (CNTs) have attracted a great deal of attention for the biological and medical science fields because of their characteristic physical and biological properties. In this study, we investigated the capacity of the 3D porous CNT scaffold (CNT porous block; CNTp) for bone regenerative medicine. Surface observations using a scanning electron microscope (SEM), crystal depositions on the surface of CNTps immersed in simulated body fluid (SBF), and evaluations of protein adsorption and controlled releasing were conducted to assess physical properties...
February 17, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28326228/innovations-from-the-ivory-tower-wilhelm-barthlott-and-the-paradigm-shift-in-surface-science
#9
Christoph Neinhuis
This article is mainly about borders that have tremendous influence on our daily life, although many of them exist and act mostly unrecognized. In this article the first objective will be to address more generally the relation between university and society or industry, borders within universities, borders in thinking and the huge amount of misunderstandings and losses resulting from these obvious or hidden borders. In the second part and in more detail, the article will highlight the impact of the research conducted by Wilhelm Barthlott throughout his scientific career during which not only one border was removed, shifted or became more penetrable...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28324955/identifying-important-regions-in-eeg-epilepsy-brain-networks
#10
Nantia D Iakovidou, Manolis Christodoulakis, Eleftherios S Papathanasiou, Savvas S Papacostas, Georgios D Mitsis
The human brain has been called the most complex object in the known universe and in many ways it constitutes the final frontier of science. Lately, the functional connectivity in human brain has been regarded and studied as a complex network using electroencephalography (EEG) signals. This means that the brain is studied as a connected system, where nodes represent different specialized brain regions and links or connections, represent communication pathways between the nodes. It is also fairly established that graph theory provides a variety of measures, methods and tools that can be useful to efficiently model, analyze and study an EEG network...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28316482/monitoring-of-bioluminescent-lactobacillus-plantarum-in-a-complex-food-matrix
#11
Gi-Seong Moon, Arjan Narbad
A bioluminescent Lactobacillus plantarum (pLuc2) strain was constructed. The luminescent signal started to increase during the early exponential phase and reached its maximum in the mid-exponential phase in a batch culture of the strain. The signal detection sensitivity of the strain was the highest in PBS (phosphate buffered saline), followed by milk and MRS broth, indicating that the sensitivity was influenced by the matrix effect. The strain was used in millet seed fermentation which has a complex matrix and native lactic acid bacteria (LAB)...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28315320/controlled-ice-nucleation-using-freeze-dried-pseudomonas-syringae-encapsulated-in-alginate-beads
#12
Lindong Weng, Shannon N Tessier, Anisa Swei, Shannon L Stott, Mehmet Toner
The control of ice nucleation is of fundamental significance in many process technologies related to food and pharmaceutical science and cryobiology. Mechanical perturbation, electromagnetic fields and ice-nucleating agents (INAs) have been known to induce ice nucleation in a controlled manner. But these ice-nucleating methods may suffer from cumbersome manual operations, safety concerns of external fields, and biocompatibility and recovery issues of INA particles, especially when used in living systems. Given the automatic ice-seeding nature of INAs, a promising solution to overcome some of the above limitations is to engineer a biocomposite that accommodates the INA particles but minimizes their interactions with biologics, as well as enabling the recovery of used particles...
April 2017: Cryobiology
https://www.readbyqxmd.com/read/28296332/monte-carlo-calculations-and-experimental-measurements-of-the-tg-43u1-recommended-dosimetric-parameters-of-125-i-model-ir-seed2-brachytherapy-source
#13
Sahar Sheikholeslami, Hassan Ali Nedaie, Mahdi Sadeghi, Hosein Pourbeigy, Sohrab Shahzadi, Mehdi Zehtabian, Mohsen Hasani, Ali S Meigooni
A new design of I125 (Model IR-Seed2) brachytherapy source has been manufactured recently at the Applied Radiation Research School, Nuclear Science and Technology Research Institute in Iran. The source consists of six resin beads (0.5 mm diameter) that are sealed in a cylindrical titanium capsule of 0.7 mm internal and 0.8 mm external diameters. This work aims to evaluate the dosimetric parameters of the newly designed I125 source using experimental measurements and Monte Carlo (MC) simulations. Dosimetric characteristics (dose rate constant, radial dose function, and 2D and 1D anisotropy functions) of the IR-Seed2 were determined using experimental measurements and MC simulations following the recommendations by the Task Group 43 (TG-43U1) report of the American Association of Physicists in Medicine (AAPM)...
July 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28251112/in-vitro-anticancer-activity-of-ethanolic-extracts-of-piper-nigrum-against-colorectal-carcinoma-cell-lines
#14
Akila Prashant, Chandini Rangaswamy, Anshu Kumar Yadav, Varun Reddy, M N Sowmya, Subbarao Madhunapantula
BACKGROUND: Piper nigrum (PN) is well known for its cytotoxic and pharmacological benefits. However, there is minimal documented evidence about its cytotoxic efficacy against colorectal carcinoma. We therefore sought to procure a precisely quantitative and qualitative result, pertaining the efficacy of an ethanolic extract of PN (EEPN) against colorectal carcinoma. MATERIALS AND METHODS: EEPN was prepared by subjecting dried PN seeds to gradient ethanol fractionation...
January 2017: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/28243425/systematic-review-of-premenstrual-postmenstrual-and-infertility-disorders-of-vitex-agnus-castus
#15
REVIEW
Mahmoud Rafieian-Kopaei, Mino Movahedi
INTRODUCTION: Vitex agnus-castus, also called vitex is aboriginal to the Mediterranean region, with long leaves, tender stem, flowers and ripening seeds. The aim of this study was to overview premenstrual, postmenstrual and infertility disorder of Vitex agnus-castus. METHODS: This review article was carried out by searching studies in PubMed, Medline, Web of Science, and IranMedex databases. The initial search strategy identified about 87 references. In this study, 43 studies were accepted for further screening, and met all our inclusion criteria (in English, full text, therapeutic effects of Vitex agnus-castus and dated mainly from the year 2009 to 2016)...
January 2017: Electronic Physician
https://www.readbyqxmd.com/read/28236403/phytochemistry-pharmacology-and-therapeutic-uses-of-black-seed-nigella-sativa
#16
REVIEW
Wesam Kooti, Zahra Hasanzadeh-Noohi, Naim Sharafi-Ahvazi, Majid Asadi-Samani, Damoon Ashtary-Larky
Black seed (Nigella sativa) is an annual flowering plant from Ranunculaceae family, native to southwest Asia. This plant has many food and medicinal uses. The use of its seeds and oil is common for treatment of many diseases, including rheumatoid arthritis, asthma, inflammatory diseases, diabetes and digestive diseases. The purpose of this study was to provide a comprehensive review on the scientific reports that have been published about N. sativa. The facts and statistics presented in this review article were gathered from the journals accessible in creditable databases such as Science Direct, Medline, PubMed, Scopus, EBSCO, EMBASE, SID and IranMedex...
October 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28212435/colour-preferences-of-uk-garden-birds-at-supplementary-seed-feeders
#17
Luke Rothery, Graham W Scott, Lesley J Morrell
Supplementary feeding of garden birds generally has benefits for both bird populations and human wellbeing. Birds have excellent colour vision, and show preferences for food items of particular colours, but research into colour preferences associated with artificial feeders is limited to hummingbirds. Here, we investigated the colour preferences of common UK garden birds foraging at seed-dispensing artificial feeders containing identical food. We presented birds simultaneously with an array of eight differently coloured feeders, and recorded the number of visits made to each colour over 370 30-minute observation periods in the winter of 2014/15...
2017: PloS One
https://www.readbyqxmd.com/read/28192995/morphology-controlled-coating-of-colloidal-particles-with-silica-influence-of-particle-surface-functionalization
#18
Xu Dong, Pan Wu, Goetz P Hellmann, Changchun Wang, Christian G Schäfer
We present a general, convenient, and efficient synthetic concept for the coating of colloidal particles with a silica (SiO2) shell of well-defined and precisely controlled morphology and porosity. Monodisperse submicroscopic polystyrene (PS) particles were synthesized via two-stage emulsifier-free emulsion polymerization and subsequent swelling polymerization, enabling selective particle surface modification by the incorporation of ionic (methacrylic acid, MAA) or nonionic (hydroxyethyl methacrylate, HEMA or methacrylamide, MAAm) comonomers, which could be proven by zeta potential measurements as well as by determining the three-phase contact angle of the colloidal particles adsorbed at the air-water and n-decane-water interface...
February 21, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28167448/lessons-to-be-learned-from-a-contentious-challenge-to-mainstream-radiobiological-science-the-linear-no-threshold-theory-of-genetic-mutations
#19
Jan Beyea
There are both statistically valid and invalid reasons why scientists with differing default hypotheses can disagree in high-profile situations. Examples can be found in recent correspondence in this journal, which may offer lessons for resolving challenges to mainstream science, particularly when adherents of a minority view attempt to elevate the status of outlier studies and/or claim that self-interest explains the acceptance of the dominant theory. Edward J. Calabrese and I have been debating the historical origins of the linear no-threshold theory (LNT) of carcinogenesis and its use in the regulation of ionizing radiation...
April 2017: Environmental Research
https://www.readbyqxmd.com/read/28124725/phorbol-esters-in-seed-oil-of-jatropha-curcas-l-saboodam-in-thai-and-their-association-with-cancer-prevention-from-the-initial-investigation-to-the-present-topics
#20
REVIEW
Hirota Fujiki, Maitree Suttajit, Anchalee Rawangkan, Keisuke Iida, Pornngarm Limtrakul, Sonthaya Umsumarng, Masami Suganuma
PURPOSE: In 1988, we first reported the complete chemical structure of a new type of phorbol ester, abbreviated to DHPB, found in seed oil of Jatropha curcas L. (Saboodam in Thai) and its tumor-promoting activity on mouse skin. Although this seed oil contains toxic phorbol ester, it was planned to use it as a feasible renewable oil and the extracted seed cake as fertilizer. This utilization value opened a new science of Jatropha curcas. METHODS: The main experimental results are cited from our publications, and the relevant literature screened from journals and PubMed...
January 25, 2017: Journal of Cancer Research and Clinical Oncology
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