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https://www.readbyqxmd.com/read/27906348/single-frequency-injection-seeded-q-switched-ho-yag-ceramic-laser-pumped-by-a-1-91%C3%AE-m-fiber-coupled-ld
#1
Yixuan Zhang, Chunqing Gao, Qing Wang, Quanxin Na, Meng Zhang, Qing Ye, Mingwei Gao, Jian Zhang
A 2090 nm injection-seeded Q-switched Ho:YAG ceramic laser pumped by a 1.91 μm fiber-coupled LD is demonstrated in this paper. Single-frequency operation of Q-switched Ho:YAG ceramic laser is achieved by injection seeding technique. The maximum output energy of the single-frequency Q-switched Ho:YAG ceramic laser is 14.76 mJ, with a pulse width of 121.6 ns and a repetition rate of 200 Hz. The half-width of the pulse spectrum measured by heterodyne technique is 3.84 MHz. The fluctuation of the center frequency of the pulsed laser is 1...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27906330/improved-sesams-for-femtosecond-pulse-generation-approaching-the-kw-average-power-regime
#2
C G E Alfieri, A Diebold, F Emaury, E Gini, C J Saraceno, U Keller
We present semiconductor saturable absorber mirrors (SESAMs) that can potentially support femtosecond pulses from ultrafast thin disk lasers (TDLs) with high average power approaching the kW-power level and high pulse energy in the range of 100 µJ to 1 mJ at megahertz pulse repetition rates. For high-power operation, the SESAM parameters will ultimately limit the shortest pulse duration from a soliton mode-locked laser before mode locking instabilities such as multiple pulsing instabilities and continuous wave (cw) breakthrough start to occur...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27906295/diode-pumped-alexandrite-lasers-in-q-switched-and-cavity-dumped-q-switched-operation
#3
G M Thomas, A Minassian, X Sheng, M J Damzen
We present the first study of Q-switched Alexandrite lasers under continuous-wave diode-pumping with operation up to 10 kHz repetition rates in TEM<sub>00</sub>, with spatial quality M<sup>2</sup> 1.15. With a pulsed-diode dual-end-pumped design, pulse energy is scaled to a record level of 3 mJ. We also demonstrate, for the first time, cavity-dumped Q-switching of diode-pumped Alexandrite lasers under continuous-wave and pulsed diode-pumping, up to 10 kHz. Pulse energy of 510 μJ is demonstrated with 3 ns pulse duration and 170 kW peak power, in TEM<sub>00</sub> with M<sup>2</sup> < 1...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27904270/morphologic-changes-of-zebrafish-melanophore-after-intense-pulsed-light-and-q-switched-nd-yag-laser-irradiation
#4
Hwa Jung Ryu, Ji Min Lee, Hee Won Jang, Hae Chul Park, Im Joo Rhyu, Il-Hwan Kim
BACKGROUND: Recently, the pulse-in-pulse mode of intense pulsed light (IPL) has been used increasingly for the treatment of melasma. OBJECTIVE: To observe the morphologic changes in the melanophore in adult zebrafish after irradiation with conventional and pulse-in-pulse IPL and Q-switched Nd:YAG (QSNY) laser. METHODS: Adult zebrafish were irradiated with conventional and pulse-in-pulse mode of IPL. The conditions for conventional IPL were 3 mJ/cm(2), 560 nm filter, and pulse widths of 7, 20, and 35 msec...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27903450/low-energy-impact-of-human-cartilage-predictors-for-microcracking-the-network-of-collagen
#5
B Kaleem, F Maier, H Drissi, D M Pierce
OBJECTIVE: We aimed to determine the minimum mechanical impact to cause microstructural damage in the network of collagen (microcracking) within human cartilage and hypothesized that energies below 0.1 J or 1 mJ/mm(3) would suffice. DESIGN: We completed 108 low-energy impact tests (0.05, 0.07, or 0.09 J; 0.75 or 1.0 m/s(2)) using healthy cartilage specimens from six male donors (30.2±8.8 yrs old). Before and after impact we acquired, imaging the second harmonic generation, ten images from each specimen (50 μm depth, 5 μm step size), resulting in 2160 images...
November 26, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27901546/poroelasticity-driven-lubrication-in-hydrogel-interfaces
#6
Erik R Reale, Alison C Dunn
It is widely accepted that hydrogel surfaces are slippery, and have low friction, but dynamic applied stresses alter the hydrogel composition at the interface as water is displaced. The induced osmotic imbalance of compressed hydrogel which cannot swell to equilibrium should drive the resistance to slip against it. This paper demonstrates the driving role of poroelasticity in the friction of hydrogel-glass interfaces, specifically how poroelastic relaxation of hydrogels increases adhesion. We translate the work of adhesion into an effective surface energy density that increases with the duration of applied pressure from 10 to 50 mJ m(-2), as measured by micro-indentation...
November 30, 2016: Soft Matter
https://www.readbyqxmd.com/read/27898941/influence-of-feeding-strategy-and-diet-for-reproductive-rabbit-does-on-intake-performances-and-health-of-young-and-females-before-and-after-weaning
#7
T Read, S Combes, T Gidenne, N Destombes, K Bébin, E Balmisse, L Fortun-Lamothe
This study aimed to determine the influences of feeding strategy and diet for reproductive females on feed intake, BW, reproductive performances, and milk composition and their effects on kit performances from birth (d 0) to 70 d of age (d 70). A total of 133 does followed for 3 reproductive cycles and their offspring, 2,322 kits from 236 litters, were divided into 3 experimental groups that differed only by the diet offered to the doe. Three experimental diets were used: a reproduction (Repro) diet (11.01 MJ DE/kg, 24...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898893/effect-of-phase-feeding-and-valine-to-lysine-ratio-during-lactation-on-sow-and-piglet-performance
#8
A Craig, W Henry, E Magowan
The potential of piglets to grow before weaning is greater than the sow can support, and as such, improving the performance of the lactating sow is a key driver of whole-farm efficiency. This study aimed to investigate the impact of 1) adopting a phased feeding approach during lactation and 2) the ratio of Val to Lys on sow and piglet performance. Multiparious sows ( = 109) were assigned to treatment at 108 d of gestation. Dietary treatments were arranged in a 2 × 2 + 1 factorial design. Dietary treatments included 2 dietary regimes: "Flat" (14...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898888/effects-of-level-of-brackish-water-on-feed-intake-digestion-heat-energy-and-blood-constituents-of-growing-boer-and-spanish-goat-wethers
#9
Y Tsukahara, R Puchala, T Sahlu, A L Goetsch
Twenty Boer (6.1 mo old and 21.3 kg) and 20 Spanish (6.6 mo old and 19.7 kg) goat wethers were used to determine effects of brackish water on feed intake, digestion, heat energy, and blood constituents. Brackish water had 6,900 mg/L total dissolved salts, 1,885 mg/L Na, 75 mg/L Mg, 1,854 mg/L chloride, 2,478 mg/L sulfate, and 9 mg/L boron. Water treatments were 100% tap water (control), 100% of a brackish water source (100-BR), 33% control and 67% brackish water (67-BR), and 67% control and 33% brackish water (33-BR)...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898858/effect-of-selection-for-residual-feed-intake-during-the-grow-finish-phase-of-production-on-sow-reproductive-performance-and-lactation-efficiency
#10
J M Young, R Bergsma, E F Knol, J F Patience, J C M Dekkers
As feed costs continue to rise and efficiency during finishing is emphasized, the impact of selecting for more efficient grow/finish pigs on reproductive performance and feed efficiency of sows must be evaluated. Therefore, the objectives of this study were to evaluate correlated responses for sow reproductive performance and lactation feed efficiency to selection for residual feed intake (RFI) during the grow/finish phase of production (RFI) in 2 selection lines of pigs developed at Iowa State University (Ames, IA) and to estimate heritabilities of these traits...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27895286/pyrolysis-of-poppy-capsule-pulp-for-bio-oil-production
#11
Derya Yeşim Hopa, Nazan Yılmaz, Oğuzhan Alagöz, Meltem Dilek, Ahmet Helvacı, Ümit Durupınar
The feasibility of biofuel production via the pyrolysis of poppy capsule pulp, the main waste product of Afyon Alkoloid Factory, was investigated. The poppy capsule pulp was shown to have a high volatile matter content (ca. 76%). Pyrolysis experiments were carried out in the temperature range 400-550°C (heating rate 18°C min(-1) and holding time 20 min) under a nitrogen atmosphere. The chemical components of the bio-oil were characterized by Fourier transform infrared spectrometry and gas chromatography-mass spectrometry...
December 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27895006/patients-need-for-tailored-comparative-health-care-information-a-qualitative-study-on-choosing-a-hospital
#12
Nicolien C Zwijnenberg, Michelle Hendriks, Evelien Bloemendal, Olga C Damman, Judith D de Jong, Diana Mj Delnoij, Jany Jd Rademakers
BACKGROUND: The Internet is increasingly being used to provide patients with information about the quality of care of different health care providers. Although online comparative health care information is widely available internationally, and patients have been shown to be interested in this information, its effect on patients' decision making is still limited. OBJECTIVE: This study aimed to explore patients' preferences regarding information presentation and their values concerning tailored comparative health care information...
November 28, 2016: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/27894310/monitoring-change-in-volume-of-calcifications-in-juvenile-idiopathic-inflammatory-myopathy-a-pilot-study-using-low-dose-computed-tomography
#13
Maria Ibarra, Cynthia Rigsby, Gabrielle A Morgan, Christina L Sammet, Chiang-Ching Huang, Dong Xu, Ira N Targoff, Lauren M Pachman
BACKGROUND: Dystrophic calcifications may occur in patients with J uvenile Idiopathic Inflammatory Myopathy (JIIM) as well as other connective tissue and metabolic diseases, but a reliable method of measuring the volume of these calcifications has not been established. The purpose of this study is to determine the feasibility of low dose, limited slice, Computed Tomography (CT) to measure objectively in-situ calcification volumes in patients with JIIM over time. METHODS: Ten JIIM patients (eight JDM, two Overlap) with calcifications were prospectively recruited over a 2-year period to undergo two limited, low dose, four-slice CT scans...
November 29, 2016: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/27893513/schneiderian-membrane-perforation-rate-and-increase-in-bone-temperature-during-maxillary-sinus-floor-elevation-by-means-of-er-yag-laser-an-animal-study-in-pigs
#14
Jacek Matys, Jakub Hadzik, Marzena Dominiak
PURPOSE: To assess the time of preparation, bone temperature increase, and the Schneiderian membrane perforation rate during maxillary sinus floor elevation. MATERIALS AND METHODS: The research included 30 maxillary sinuses (n = 30) of a pig, divided into 2 groups (n = 15). The lateral bony windows were created using Er:YAG laser (200 mJ, 15 Hz, energy density: 25.48 J/cm) and a diamond bur (control). The membrane was elevated using laser (50 mJ, 50 Hz) and hand instruments...
November 23, 2016: Implant Dentistry
https://www.readbyqxmd.com/read/27893487/radial-extracorporeal-shock-wave-therapy-is-effective-and-safe-in-chronic-distal-biceps-tendinopathy
#15
John P Furia, Jan-Dirk Rompe, Nicola Maffulli, Angelo Cacchio, Christoph Schmitz
OBJECTIVE: To assess the efficacy and safety of radial extracorporeal shock wave therapy (rESWT) for chronic distal biceps tendinopathy (cDBT). DESIGN: Case-control study (level of evidence, 3). SETTING: SUN Orthopaedics and Sports Medicine. PATIENTS: Patients with a diagnosis of cDBT were recruited between January 2010 and February 2015. INTERVENTIONS: Patients received a single session of rESWT (2000 shock waves with energy flux density of 0...
November 23, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/27889592/marijuana-effects-on-changes-in-brain-structure-and-cognitive-function-among-hiv-and-hiv-adults
#16
April D Thames, Taylor P Kuhn, Timothy J Williamson, Jacob D Jones, Zanjbeel Mahmood, Andrea Hammond
BACKGROUND: The current study examined the independent and interactive effects of HIV and marijuana (MJ) use on brain structure and cognitive function among a sample of HIV-positive (HIV+) and HIV-negative (HIV-) individuals. METHODS: Participants (HIV+, n=48; HIV-, n=29) individuals underwent cognitive testing, questionnaires about substance use, and brain MRI. The HIV+ group was clinically stable based upon current plasma CD4 count, 50% had undetectable viral load (i...
November 14, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27889156/survival-of-hepatitis-a-virus-and-aichi-virus-in-cranberry-based-juices-at-refrigeration-4%C3%A2-%C3%A2-c
#17
Snigdha Sewlikar, Doris H D'Souza
Viral foodborne illness continues to be a health-concern globally, with numerous fruit and juice outbreaks of Hepatitis A virus (HAV) reported worldwide. Aichi virus (AiV) is an emerging pathogen with limited epidemiological data. Both, HAV and AiV are resistant to low pH and can survive under adverse environmental conditions leading to transmission ease. The objective of this study was to evaluate the survival of HAV and AiV in commercially-available cranberry-based juices (Cranberry juice cocktail, CJ and a 100% juice with cranberry, MJ) over 21 days at refrigeration (4 °C)...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27885682/fractional-laser-assisted-drug-uptake-impact-of-time-related-topical-application-to-achieve-enhanced-delivery
#18
Christina A Banzhaf, Daniel Thaysen-Petersen, Christiane Bay, Peter A Philipsen, Mette Mogensen, Tarl Prow, Merete Haedersdal
BACKGROUND AND OBJECTIVE: Ablative fractional laser (AFXL) is acknowledged to increase uptake of topically applied agents in skin. AFXL channels gradually close over time, which may impair this capability. The time frame for applying a drug after AFXL exposure remains to be established. The aim of this study, was to investigate the importance of time-related topical application after AFXL exposure and to relate resultant uptake in skin with AFXL channel morphology and skin integrity. STUDY DESIGN/MATERIALS AND METHODS: Buttock skin of healthy volunteers (n = 11) was exposed to 10,600 nm fractional CO2 laser using 5% density, 120 μm beam diameter, 15 mJ pulse energy...
November 25, 2016: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/27885520/the-effect-of-pre-operative-topical-anaesthetic-cream-on-the-ablative-width-and-coagulative-depth-of-ablative-fractional-resurfacing-laser
#19
Preawphan Punyaratabandhu, Rungsima Wanitphakdeedecha, Penvadee Pattanaprichakul, Panitta Sitthinamsuwan, Weeranut Phothong, Sasima Eimpunth, Visnu Lohsiriwat, Woraphong Manuskiatti
Topical anaesthetic cream (TAC) is commonly used as a pre-treatment of ablative fractional resurfacing (AFR) laser. Most of anaesthetic cream contains distilled water as major component. Therefore, pre-operative TAC may interfere the photothermal reaction in the skin treated with fractional carbon-dioxide (FCO2) laser and fractional erbium-doped yttrium aluminium garnet (FEr:YAG) laser. The objective of the study was to compare the ablative width (AW) and coagulative depth (CD) of AFR laser with and without pre-treatment with TAC...
November 24, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27883996/phototherapy-with-narrow-band-uvb-in-adult-guttate-psoriasis-results-and-patient-assessment
#20
Montserrat Fernández-Guarino, Sonsoles Aboín-González, Diana Velázquez, Lucia Barchino, Natividad Cano, Pablo Lázaro
BACKGROUND: Acute guttate psoriasis (AGP) is a distinctive clinical entity with good response to treatment with narrow-band ultraviolet B (NB-UVB). OBJECTIVE: To investigate the results of NB-UVB phototherapy in adult patients with adult guttate psoriasis. MATERIAL AND METHODS: We carried out a prospective, open, and observational study. Patients over 18 years with more than 5% of body surface area affected were included. The PASI was assessed prior to and after treatment...
November 25, 2016: Dermatology: International Journal for Clinical and Investigative Dermatology
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