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https://www.readbyqxmd.com/read/29457726/a-robust-oil-in-oil-emulsion-for-the-nonaqueous-encapsulation-of-hydrophilic-payloads
#1
Xiaocun Lu, Joshua S Katz, Adam Schmitt, Jeffrey S Moore
Compartmentalized structures widely exist in cellular systems (organelles) and perform essential functions in smart composite materials (microcapsules, vasculatures, and micelles) to provide localized functionality and enhance materials compatibility. An entirely water-free compartmentalization system is of significant value to the materials community as nonaqueous conditions are critical to packaging microcapsules with water-free hydrophilic payloads while avoiding energy-intensive drying steps. Few nonaqueous encapsulation techniques are known, especially when considering just the scalable processes that operate in batch mode...
February 19, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29453578/a-stopped-flow-light-scattering-methodology-for-assessing-the-osmotic-water-permeability-of-whole-sertoli-cells
#2
Anna Maggio, Raquel L Bernardino, Patrizia Gena, Marco G Alves, Pedro F Oliveira, Giuseppe Calamita
Movement of water into and out of the cell is fundamental to life. In the male reproductive tract, at the level of the seminiferous epithelium, Sertoli cells are pivotal in mediating the movement of water into the luminal compartment, a process providing a means of transport of spermatozoa into the epididymal ducts. Here, we describe a stopped-flow light-scattering methodology to easily assess the Sertoli cell osmotic water permeability. The devised methodology is well suited for studying how the Sertoli cell's permeability changes following exogenous stimuli...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29450988/salso-bromo-iodine-thermal-water-a-nonpharmacological-alternative-treatment-for-postnasal-drip-related-cough-in-children-with-upper-respiratory-tract-infections
#3
I La Mantia, G Ciprandi, A Varricchio, F Cupido, C Andaloro
Postnasal drip (PND)-related cough is a very common symptom in patients with upper respiratory tract infections (URTIs). At present, there is not a standard treatment for postnasal drip and postnasal drip-related cough. The aim of this pilot study was to evaluate the efficacy of a specific salso-bromo-iodine thermal water containing hyaluronic acid and grapefruit seed extract (SBI-H-GSE) comparing it with a normal saline solution in children with URTIs who refer PND-related symptoms. The study was randomized, single-blind, and controlled...
January 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29450746/impact-of-habitat-heterogeneity-on-zooplankton-assembly-in-a-temperate-river-floodplain-system
#4
Anita Galir Balkić, Ivančica Ternjej, Irella Bogut
Dissimilar life features of Rotifera, Cladocera and Copepoda enable these organisms to respond differently to changes in the hydrological regime which influence alterations in environmental characteristics. We investigated the effect of habitat heterogeneity (e.g. eupotamal, parapotamal, palaeopotamal) on individual zooplankton group assemblages and biodiversity indices (α, β and γ diversity) during hydro regime change in floodplain waterbodies. Dissolved oxygen and organic nitrogen concentrations changed significantly among hydrological states while water depth was affected by both site and hydro regime replacement...
February 15, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29450661/monitoring-water-quality-in-a-hypereutrophic-reservoir-using-landsat-etm-and-oli-sensors-how-transferable-are-the-water-quality-algorithms
#5
Eliza S Deutsch, Ibrahim Alameddine, Mutasem El-Fadel
The launch of the Landsat 8 in February 2013 extended the life of the Landsat program to over 40 years, increasing the value of using Landsat to monitor long-term changes in the water quality of small lakes and reservoirs, particularly in poorly monitored freshwater systems. Landsat-based water quality hindcasting often incorporate several Landsat sensors in an effort to increase the temporal range of observations; yet the transferability of water quality algorithms across sensors remains poorly examined. In this study, several empirical algorithms were developed to quantify chlorophyll-a, total suspended matter (TSM), and Secchi disk depth (SDD) from surface reflectance measured by Landsat 7 ETM+ and Landsat 8 OLI sensors...
February 15, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29449027/suberized-transport-barriers-in-arabidopsis-barley-and-rice-roots-from-the-model-plant-to-crop-species
#6
Tino Kreszies, Lukas Schreiber, Kosala Ranathunge
Water is the most important prerequisite for life and plays a major role during uptake and transport of nutrients. Roots are the plant organs that take up the major part of water, from the surrounding soil. Water uptake is related to the root system architecture, root growth, age and species dependent complex developmental changes in the anatomical structures. The latter is mainly attributed to the deposition of suberized barriers in certain layers of cell walls, such as endo- and exodermis. With respect to water permeability, changes in the suberization of roots are most relevant...
February 7, 2018: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29448643/effect-of-colloidal-medium-on-the-shelf-life-and-stability-of-gold-nanorods-prepared-by-seed-mediated-synthesis
#7
Parveer Kaur, Bhupendra Chudasama
Gold nanorods (GNRs) owing to their tunable longitudinal surface plasmon resonance in tissue transparent near infrared region have potential applications (like cancer imaging, surface enhanced Raman spectroscopy, cancer targeting, drug delivery and optical hyperthermia) in nanomedicine. Success of these diagnosis/therapy options depends on the plasmonic properties of gold nanorods, which are influenced by the interaction of GNRs with the colloidal medium. In this article, a systematic study is performed to evaluate the effect of colloidal medium on shelf life and stability of gold GNRs...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448515/polyalkylene-glycol-based-lubricants-and-tribological-behaviour-role-of-ionic-liquids-and-graphene-oxide-as-additives
#8
Adolfo Senatore, Mario Pisaturo, Domenico Guida
The polyalkylene glycol (PAG) lubricants are widely used as gear, bearing and compressor oils in refrigerant systems. They are designed to provide outstanding benefits in terms of efficiency, long oil life, and equipment protection. These fully synthetic lubricants have been developed for use under operating conditions beyond the capabilities of other synthetic lubricants and mineral oils as their characteristic low pour point ensures excellent fluidity at low-temperature. On the other hand, the main drawback of PAG oils is the marked hygroscopicity, i...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29445901/geology-and-geochemistry-of-the-atacama-desert
#9
J Tapia, R González, B Townley, V Oliveros, F Álvarez, G Aguilar, A Menzies, M Calderón
The Atacama Desert, the driest of its kind on Earth, hosts a number of unique geological and geochemical features that make it unlike any other environment on the planet. Considering its location on the western border of South America, between 17 and 28 °S, its climate has been characterized as arid to hyperarid for at least the past 10 million years. Notably dry climatic conditions of the Atacama Desert have been related to uplift of the Andes and are believed to have played an important role in the development of the most distinctive features of this desert, including: (i) nitrates and iodine deposits in the Central Depression, (ii) secondary enrichment in porphyry copper deposits in the Precordillera, (iii) Li enrichment in salt flats of the Altiplano, and (iv) life in extreme habitats...
February 14, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29445512/changes-in-tear-volume-and-ocular-symptoms-of-patients-receiving-oral-anticancer-drug-s-1
#10
Reiko Kuriki, Tsuyoshi Hata, Kinuyo Nakayama, Yuichi Ito, Kazunari Misawa, Seiji Ito, Michiko Tatematsu, Norio Kaneda
Background: Most eye disorders are not fatal but may deteriorate the quality of life of a patient. The eye disorder that is most frequently reported in the cancer chemotherapy is associated with the combination of tegafur/gimeracil/potassium oxonate (S-1). However, preventive methods or treatment methods for the eye disorder have not yet been established. This study aimed to determine changes in tear volume and subjective ocular symptoms during the treatment period in patients receiving S-1 monotherapy for early detection of adverse effects in the eye and establishment of its treatment methods...
2018: Journal of Pharmaceutical Health Care and Sciences
https://www.readbyqxmd.com/read/29444994/life-cycle-assessment-of-cleanroom-coveralls-reusable-and-disposable
#11
Eric Vozzola, Michael Overcash, Evan Griffing
Cleanroom garments serve a critical role in such industries as pharmaceuticals, life sciences, and semiconductor manufacturing. These textiles are available in reusable and disposable alternatives. In this report, the environmental sustainability of cleanroom coveralls is examined using life cycle assessment technology. The complete supply chain, manufacture, use, and end-of-life phases for reusable and disposable cleanroom coveralls are compared on a cradle-to-end-of-life cycle basis. Three industry representative coveralls are examined: a reusable woven polyethylene terephthalate (PET) coverall, a disposable flash spunbonded high density polyethylene (HDPE) coverall, and a disposable spunbond-meltblown-spunbond polypropylene (SMS PP) coverall...
February 14, 2018: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/29444660/volunteers-in-ethiopia-s-women-s-development-army-are-more-deprived-and-distressed-than-their-neighbors-cross-sectional-survey-data-from-rural-ethiopia
#12
Kenneth Maes, Svea Closser, Yihenew Tesfaye, Yasmine Gilbert, Roza Abesha
BACKGROUND: Many Community Health Workers (CHWs) experience the same socioeconomic and health needs as their neighbors, given that they are by definition part of their communities. Yet very few studies aim to measure and characterize experiences of deprivation, poverty, and wellbeing among community health workers. This study quantitatively examines deprivation and wellbeing in Ethiopia's Women's Development Army (WDA), a massive unpaid community health workforce intended to improve population health and modernize the country...
February 14, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29444096/invasive-african-clawed-frogs-in-california-a-reservoir-for-or-predator-against-the-chytrid-fungus
#13
Emily A Wilson, Cheryl J Briggs, Tom L Dudley
Amphibian species are experiencing population declines due to infection by the fungal pathogen, Batrachochytrium dendrobatidis (Bd). The African clawed frog (Xenopus laevis), an asymptomatic carrier of Bd, has been implicated in the spread of this pathogen through global trade and established invasive populations on several continents. However, research has not explored the relationships of both life stages of this amphibian with Bd. While the post-metamorphic individuals may act as a reservoir, spreading the infection to susceptible species, the filter-feeding larvae may consume the motile Bd zoospores from the water column, potentially reducing pathogen abundance and thus the likelihood of infection...
2018: PloS One
https://www.readbyqxmd.com/read/29443541/a-method-for-choosing-the-best-samples-for-mars-sample-return
#14
Peter R Gordon, Mark A Sephton
Success of a future Mars Sample Return mission will depend on the correct choice of samples. Pyrolysis-FTIR can be employed as a triage instrument for Mars Sample Return. The technique can thermally dissociate minerals and organic matter for detection. Identification of certain mineral types can determine the habitability of the depositional environment, past or present, while detection of organic matter may suggest past or present habitation. In Mars' history, the Theiikian era represents an attractive target for life search missions and the acquisition of samples...
February 14, 2018: Astrobiology
https://www.readbyqxmd.com/read/29442786/preparation-of-polyurethane-graphite-composite-films-with-stable-mechanical-property-and-wear-resistance-underwater
#15
Miaomiao Wang, Zubin Wang, Qirong Chen, Xiangfu Meng, Liping Heng
The wear resistance and stable mechanical properties affect the service life of the underwater functional materials to a certain extent. Unfortunately, the current study of underwater functional materials is rarely related to these aspects. Herein, we successfully designed and prepared polyurethane/graphite nanosheet (PU/GN) composite materials, which exhibited excellent wear resistance and stable mechanical properties underwater. The PU/GN composite films were prepared by evaporating a mixed solution of PU and GN on concave hexagonal honeycomb silicon templates...
June 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29442368/effects-of-copper-on-olfactory-behavioral-and-other-sublethal-responses-of-saltwater-organisms-are-estimated-chronic-limits-using-the-biotic-ligand-model-protective
#16
David K DeForest, Robert W Gensemer, Joseph W Gorsuch, Joseph S Meyer, Robert C Santore, Burt K Shephard, Jean M Zodrow
There is concern whether regulatory criteria for copper (Cu) are protective against chemosensory and behavioral impairment in aquatic organisms. We compiled Cu toxicity data for these and other sublethal endpoints in 35 tests with saltwater organisms and compared the Cu toxicity thresholds to biotic ligand model (BLM)-based estimated chronic limits (ECL values, which are EC20 values [20% effect concentrations] for the embryo-larval life stage of the blue mussel [Mytilus edulis]-a sensitive saltwater species to Cu that has historically been used to derive saltwater Cu criteria)...
February 14, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29441673/plasma-assisted-synthesis-and-surface-modification-of-electrode-materials-for-renewable-energy
#17
REVIEW
Shuo Dou, Li Tao, Ruilun Wang, Samir El Hankari, Ru Chen, Shuangyin Wang
Renewable energy technology has been considered as a "MUST" option to lower the use of fossil fuels for industry and daily life. Designing critical and sophisticated materials is of great importance in order to realize high-performance energy technology. Typically, efficient synthesis and soft surface modification of nanomaterials are important for energy technology. Therefore, there are increasing demands on the rational design of efficient electrocatalysts or electrode materials, which are the key for scalable and practical electrochemical energy devices...
February 14, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29441601/refrigeration-cryopreservation-and-pathogen-inactivation-an-updated-perspective-on-platelet-storage-conditions
#18
REVIEW
L Waters, M Cameron, M P Padula, D C Marks, L Johnson
Conventional storage of platelet concentrates limits their shelf life to between 5 and 7 days due to the risk of bacterial proliferation and the development of the platelet storage lesion. Cold storage and cryopreservation of platelets may facilitate extension of the shelf life to weeks and years, and may also provide the benefit of being more haemostatically effective than conventionally stored platelets. Further, treatment of platelet concentrates with pathogen inactivation systems reduces bacterial contamination and provides a safeguard against the risk of emerging and re-emerging pathogens...
February 14, 2018: Vox Sanguinis
https://www.readbyqxmd.com/read/29438578/individual-heterogeneity-and-early-life-conditions-shape-growth-in-a-freshwater-top-predator
#19
Chloé R Nater, Atle Rustadbakken, Torbjørn Ergon, Øystein Langangen, S Jannicke Moe, Yngvild Vindenes, L Asbjørn Vøllestad, Per Aass
Body size can have profound impacts on survival, movement, and reproductive schedules shaping individual fitness, making growth a central process in ecological and evolutionary dynamics. Realized growth is the result of a complex interplay between life history schedules, individual variation, and environmental influences. Integrating all of these aspects into growth models is methodologically difficult, depends on the availability of repeated measurements of identifiable individuals, and consequently represents a major challenge in particular for natural populations...
February 13, 2018: Ecology
https://www.readbyqxmd.com/read/29435903/preparation-of-controlled-release-particles-based-on-spherical-porous-silica-used-as-the-drug-carrier-by-the-dry-coating-method
#20
Shohei Nakamura, Shihoko Kondo, Ayaka Mohri, Takatoshi Sakamoto, Hiroshi Yuasa
A controlled-release formulation is a dosage form that could improve a patient's quality of life by reducing the frequency of administration, while ensuring the continued effect of the medicine and reducing the side effects. To prepare these controlled-release particles, a wet coating method in which a drug is coated with a controlled-release material using water or an organic solvent is used, but with this method, the coating process is very time-consuming and requires large amounts of energy for the drying phase...
February 12, 2018: AAPS PharmSciTech
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