keyword
MENU ▼
Read by QxMD icon Read
search

Silver

keyword
https://www.readbyqxmd.com/read/28813732/gastric-zygomycosis-in-a-previously-healthy-56-year-old-male
#1
Ashwyna Sunassee, Desirae M Muirhead
Zygomycosis refers to invasive fungal infections caused by fungi belonging to the phylum zygomycota. Infections generally occur in immunocompromised individuals. The following case is of a previously healthy 56 year-oldmale admitted to the hospital following a motor vehicle accident. During his hospitalization, there was a significant drop in hemoglobin with no obvious source of bleeding. This prompted the clinician to insert a nasogastric tube which returned at least 2 liters of black fluid and led to an upper gastrointestinal endoscopy...
April 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28813166/are-inner-city-children-with-asthma-receiving-specialty-care-as-recommended-in-national-asthma-guidelines
#2
Karen L Warman, Ellen J Silver
OBJECTIVE: To examine whether children with asthma in an urban healthcare network are receiving asthma specialty care, and which factors, if any, are associated with receipt of this care, including: child's racial/ethnic group, age, socio-economic status (SES), insurance, and/or acute care utilization. METHODS: This study is a retrospective cohort study of children ages 7- 17 years old who received primary care in an urban medical center in 2012 and had a primary or secondary ICD9 code for asthma...
August 16, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28812322/reactivity-of-silanes-with-tbuponop-ruthenium-dichloride-facile-synthesis-of-chloro-silyl-ruthenium-compounds-and-subsequent-reactivity
#3
James Matthew Boncella, Nickolas H Anderson, Aaron M Tondreau
The coordination of tBuPONOP (tBuPONOP = 2,6-bis(ditertbutylphosphinito)pyridine) to different ruthenium starting materials, to generate (tBuPONOP)RuCl2, was investigated. The 16-electron species (tBuPONOP)Ru(H)Cl was produced from the reaction of triethylsilane with (tBuPONOP)RuCl2. Reactions of (tBuPONOP)RuCl2 with both phenylsilane or diphenylsilane afforded the 16-electron hydrido-silyl species (tBuPONOP)Ru(H)(PhSiCl2) and (tBuPONOP)Ru(H)(Ph2SiCl), respectively. Reactions of all three of these complexes with silver triflate afforded the simple salt metathesis products of (tBuPONOP)Ru(H)(OTf), (tBuPONOP)Ru(H)(PhSiCl(OTf)), and (tBuPONOP)Ru(H)(Ph2Si(OTf))...
August 15, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28812312/a-systematic-review-of-silver-diamine-fluoride-effectiveness-and-application-in-older-adults
#4
REVIEW
Amruta D Hendre, George W Taylor, Elisa M Chávez, Susan Hyde
OBJECTIVE: This systematic review examines the effectiveness of silver diamine fluoride (SDF) in the management of caries in older adults. BACKGROUND: Silver diamine fluoride has been extensively researched and proven effective for caries prevention and arrest in children. Limited studies support its effectiveness in adult and older adult populations. MATERIALS AND METHODS: Multiple databases were searched according to specified inclusion-exclusion criteria...
August 15, 2017: Gerodontology
https://www.readbyqxmd.com/read/28812092/effect-of-ligand-structure-on-the-size-control-of-mono-and-bi-thiolate-protected-silver-nanoclusters
#5
Kaiyuan Zheng, Xun Yuan, Jianping Xie
Ligand structure could control the size and structure of thiolate-protected silver nanoclusters (Ag NCs) in water. Small alkane-thiols, medium-sized aromatic-thiols, and bulky thiol-containing tri-peptides direct the formation of Ag25(SR)18, Ag44(SR)30, and Ag9-15(SR)5-10, respectively. In addition, small alkane-thiol collocates well with other types of thiolate ligand to generate bi-thiolate-protected Ag25 NCs with controlled ligand landscapes on their surfaces.
August 16, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28811657/colorimetric-fingerprints-of-gold-nanorods-for-discriminating-catecholamine-neurotransmitters-in-urine-samples
#6
Somayeh Jafarinejad, Mahmoud Ghazi-Khansari, Forough Ghasemi, Pezhman Sasanpour, M Reza Hormozi-Nezhad
Catecholamine neurotransmitters, generally including dopamine (DA), epinephrine (EP) and norepinephrine (NE) are known as substantial indicators of various neurological diseases. Simultaneous detection of these compounds and their metabolites is highly recommended in early clinical diagnosis. To this aim, in the present contribution, a high performance colorimetric sensor array has been proposed for the detection and discrimination of catecholamines based on their reducing ability to deposit silver on the surface of gold nanorods (AuNRs)...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811584/nanopriming-technology-for-enhancing-germination-and-starch-metabolism-of-aged-rice-seeds-using-phytosynthesized-silver-nanoparticles
#7
Wuttipong Mahakham, Ajit K Sarmah, Santi Maensiri, Piyada Theerakulpisut
Application of nanomaterials for agriculture is relatively new as compared to their use in biomedical and industrial sectors. In order to promote sustainable nanoagriculture, biocompatible silver nanoparticles (AgNPs) have been synthesized through green route using kaffir lime leaf extract for use as nanopriming agent for enhancing seed germination of rice aged seeds. Results of various characterization techniques showed the successful formation of AgNPs which were capped with phytochemicals present in the plant extract...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810372/support-and-conflict-in-relationships-and-psychological-health-in-adolescents-and-young-adults-with-cancer
#8
Joseph S Kay, Vanessa Juth, Roxane Cohen Silver, Leonard S Sender
Perceived support and conflict between adolescents and young adults with cancer and their primary caregivers, other family, close friends, and medical staff were examined in relation to adolescents and young adults' psychological health. Adolescents and young adults ( n = 115, 51% male, ages 12-24 years, M (standard deviation)  = 16.07 (2.29)) in outpatient cancer treatment perceived more support and conflict within familial relationships than other relationships. Among familial relationships, perceived support and conflict were associated with psychological health; within other relationships, only support was associated with psychological health...
December 1, 2016: Journal of Health Psychology
https://www.readbyqxmd.com/read/28810197/photochemical-formation-of-chitosan-stabilized-near-infrared-absorbing-silver-nanoworms-a-green-synthetic-strategy-and-activity-on-gram-negative-pathogenic-bacteria
#9
Sreekar Marpu, Samar S Kolailat, Daniel Korir, Brian L Kamras, Ratnesh Chaturvedi, Abel Joseph, Christopher M Smith, Misael C Palma, Jyoti Shah, Mohammad A Omary
A facile, single-step, non-seeded photochemical protocol for producing a new type of anisotropic silver nanostructure, "nanoworms", with curved longer dimensions and smooth, rounded edges. The nanoworms exhibit surface plasmon resonance (SPR) absorption in the near-infrared window (NIRW) region and are stabilized using biocompatible polymer chitosan, rendering biocompatibility and amplified safety for biological utility of the composition. Both NIRW-absorbing nanoworms and visible-absorbing nanospheres herein are attained exclusively by employing green chemistry principles...
August 4, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28810193/kinetics-and-mechanism-of-antibacterial-activity-and-cytotoxicity-of-ag-rgo-nanocomposite
#10
Marjan Moghayedi, Elaheh K Goharshadi, Kiarash Ghazvini, Hossein Ahmadzadeh, Laleh Ranjbaran, Raheleh Masoudi, Ralf Ludwig
Nowadays, nanomaterials with remarkable antibacterial activity and low cytotoxicity attract much interest in research. By considering the antibacterial activity of Ag and graphene oxide (GO), the Ag-RGO nanocomposite was prepared by a one-pot and facile technique and it was used to evaluate its antibacterial activity and cytotoxicity against Escherichia coli and glioblastoma cancer cells (U87MG), respectively. The antibacterial activity was studied by micro-dilution and colony counting methods to investigate cell viability...
August 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28809553/structure-directing-role-of-phosphonate-in-the-synthesis-of-high-nuclearity-silver-i-sulfide-ethynide-thiolate-clusters
#11
Jun-Ling Jin, Yun-Peng Xie, Han Cui, Guang-Xiong Duan, Xing Lu, Thomas C W Mak
Phosphonate ligands as structure-directing components have been employed to construct four new high-nuclearity silver(I) sulfide-ethynide-thiolate clusters, in which silver(I) aggregates (t)BuC≡C⊃Ag3, (t)BuC≡C⊃Ag4, and 2(t)BuC≡C⊃Ag7 are bridged by (t)BuS(-) ligands to engender respective silver(I) ethynide-thiolate clusters functioning as integral shell components, which are supported by phosphonate ligands. In each silver(I) sulfide-ethynide-thiolate cluster, a different encapsulated silver sulfide cluster serves as a core template...
August 15, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28809416/heteroleptic-nickel-ii-dinhc-complexes-and-an-unusual-reverse-carbene-transfer-reaction-to-silver-i
#12
Han Vinh Huynh, Christine Hui Min Koh, Van Ha Nguyen
A series of rare [NiX2((Me)CCprop)] complexes bearing the cis-chelating benzimidazole-derived dicarbene ligand (Me)CCprop and varying anionic coligands (2, X = N3; 3, X = NCS; 4, X = I; 5, X = O2CCF3) have been prepared and coligand dependent structural and spectroscopic features have been evaluated. This study also revealed an unusual 'reverse' carbene transfer reaction from nickel to silver giving the disilver species [Ag2X2(μ-κ(2-Me)CCprop)] (6, X = OAc; 7, X = O2CCF3). A preliminary catalytic study of two representative Ni(II) diNHC complexes in the aqueous and phosphine-free Suzuki-Miyaura coupling reaction of aryl halides is reported as well...
August 15, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28808706/defined-tetranuclear-coinage-metal-chains
#13
Christoph Kaub, Sergei Lebedkin, Sebastian Bestgen, Ralf Köppe, Manfred M Kappes, Peter W Roesky
To force metal ions in heterometallic coinage metal complexes into preset compartments, we have synthesized a ligand with two N-heterocyclic carbenes (NHCs) separated by a methylene bridge and two bipyridine moieties tethered to each NHC moiety. By using this ligand, tetranuclear heterodimetallic gold/copper and gold/silver complexes were obtained. These complexes show an unprecedented V-shape or linear MAu2M (M = Cu, Ag) configuration in the solid state. The photophysical properties of the new compounds are significantly affected by the complexed metal ions...
August 15, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28808582/ludwig-guttmann-s-memorandum-a-review-on-the-surgical-aspects-of-spinal-cord-injuries-written-in-1944-for-the-nerve-injury-committee-of-the-medical-research-council-with-notes-and-commentary
#14
https://www.readbyqxmd.com/read/28808557/timing-and-pattern-of-annual-silver-eel-migration-in-two-european-watersheds-are-determined-by-similar-cues
#15
Odd Terje Sandlund, Ola H Diserud, Russell Poole, Knut Bergesen, Mary Dillane, Gerard Rogan, Caroline Durif, Eva B Thorstad, Leif Asbjørn Vøllestad
Many animals perform long-distance migrations in order to maximize lifetime reproductive success. The European eel migrates several thousand kilometers between their feeding habitats in continental waters (fresh-, brackish, and sea water) and their spawning area in the Sargasso Sea. Eels residing in freshwaters usually initiate their spawning migration as silver eels during autumn, triggered by diverse environmental cues. We analyzed the time series of silver eel downstream migration in Burrishoole, Ireland (1971-2015), and Imsa, Norway (1975-2015), to examine factors regulating the silver eel migration from freshwater to the sea...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28808381/characterization-antibacterial-and-antioxidant-properties-of-silver-nanoparticles-synthesized-from-aqueous-extracts-of-allium-sativum-zingiber-officinale-and-capsicum-frutescens
#16
Gloria Aderonke Otunola, Anthony Jide Afolayan, Emmanuel Olusegun Ajayi, Samuel Wale Odeyemi
BACKGROUND: Herbal drug delivery is limited by poor solubility and bioavailability which can be overcome with suitable nanomaterials that will enhance their pharmacokinetics and performance. OBJECTIVE: This study aimed to analyze the synthesis, characterization, and biological activities of silver nanoparticles (AgNPs) from three spices. MATERIALS AND METHODS: AgNPs were prepared using 0.1 M silver nitrate and aqueous extracts of Allium sativum L...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807880/-broad-spectrum-bactericidal-activity-of-a-new-bioactive-grafting-material-f18-against-clinically-important-bacterial-strains
#17
M T Souza, L A Campanini, C R Chinaglia, O Peitl, E D Zanotto, C W O Souza
Infection is the most relevant surgical complication in implant or grafting procedures. Osteomyelitis and other chronic conditions pose a constant challenge in the current practice of medicine. In this context, a grafting biomaterial that possesses antibacterial properties combined with bioactivity could have great clinical impact. Researchers at the Vitreous Materials Laboratory (LaMaV-UFSCar) recently developed a glass composition, F18, which presents an improved workability range combined with high bioactivity...
August 11, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28807811/clinical-validation-of-a-genome-wide-dna-methylation-assay-for-molecular-diagnosis-of-imprinting-disorders
#18
Erfan Aref-Eshghi, Laila C Schenkel, Hanxin Lin, Cindy Skinner, Peter Ainsworth, Guillaume Paré, Victoria Siu, David Rodenhiser, Charles Schwartz, Bekim Sadikovic
Genomic imprinting involves a DNA methylation-dependent and parent-of-origin-specific regulation of gene expression. Clinical assays for imprinting disorders are genomic locus-, disorder-, and molecular defect-specific. We aimed to clinically validate a genome-wide approach for simultaneous testing of common imprinting disorders in a single assay. Using genome-wide DNA methylation arrays, epigenetic profiles from peripheral blood of patients with Angelman, Prader-Willi, Beckwith-Wiedemann, and Silver-Russell syndrome were compared to a reference cohort of 361 unaffected individuals...
August 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28807772/streptococcus-agalactiae-impairs-cerebral-bioenergetics-in-experimentally-infected-silver-catfish
#19
Matheus D Baldissera, Carine F Souza, Belisa S Parmeggiani, Roberto C V Santos, Guilhian Leipnitz, Karen L S Moreira, Maria Izabel U M da Rocha, Marcelo L da Veiga, Bernardo Baldisserotto
It is becoming evident that bacterial infectious diseases affect brain energy metabolism, where alterations of enzymatic complexes of the mitochondrial respiratory chain and creatine kinase (CK) lead to an impairment of cerebral bioenergetics which contribute to disease pathogenesis in the central nervous system (CNS). Based on this evidence, the aim of this study was to evaluate whether alterations in the activity of complex IV of the respiratory chain and CK contribute to impairment of cerebral bioenergetics during Streptococcus agalactiae infection in silver catfish (Rhamdia quelen)...
August 11, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28806678/the-sorptive-and-reductive-capacities-of-biochar-supported-nanoscaled-zero-valent-iron-nzvi-in-relation-to-its-crystallite-size
#20
Shengsen Wang, Yanxia Zhou, Bin Gao, Xiaozhi Wang, Xianqiang Yin, Ke Feng, Jun Wang
In this work, nZVI was immobilized by bamboo derived biochars (nZVI/BB), hydrogen peroxide (H2O2) (nZVI/PBB) and nitric acid (HNO3) (nZVI/HBB) modified BB. H2O2 and HNO3 deceased surface area and pore volume of pristine biochars. Total iron (Fe) contents were 16.50, 24.40, and 13.08% for nZVI/BB, nZVI/PBB and nZVI/HBB, respectively. The X-ray diffraction revealed that nZVI in biochar matrix was dominantly metallic Fe coated with Fe oxides. The transmission electron microscopy indicated nZVI particle sizes were 41...
August 7, 2017: Chemosphere
keyword
keyword
48118
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"