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1.
Cihan Ka?ar Kadir ?zcan ?smet Tak?? Kutlay Gürbulak Hasan ?zen Musa Karaman 《Journal of veterinary science (Suw?n-si, Korea)》2008,9(4):429-431
Congenital malformations with multiple anomalies have been described infrequently in the veterinary literature. A stillborn male crossbred lamb with diprosopus, craniorachischisis, and arthrogryposis was examined macroscopically and histopathologically in this study. The left head was smaller than the right head. Micrencephaly, agnathia, and a rudimentary tongue, which was adherent to the palate, were present in the left head. Micrencephaly, brachygnathia superior, and cleft palate were present in the right head. Cerebellar agenesis and spinal cord hypoplasia were observed. The cerebrums and the spinal cord were covered with a tapering membranous structure. Neural and dermal tissues were noted to intervene upon microscopic examination of this structure. Disorganization of neurons was observed in both cerebrums, though it was more severe in the left one. This case demonstrates many congenital defects occurring together in a lamb. 相似文献
2.
Boron doped PVA/Zr-Al acetate nanofibers were prepared by electrospinning using PVA as a precursor. The effect of calcination
temperature on morphology and crystal structure was investigated at 250, 500, and 800 °C. The study also establishes the effect
of boron doping on the morphology of PVA/Zr-Al acetate nanofibers at various calcination temperatures. The measurements showed
that the conductivity, pH, viscosity and the surface tension of the hybrid polymer solutions have increased with boron doping.
In addition, the fibers were characterized by FTIR, DSC, XPS, XRD and SEM techniques. The addition of boron did not only increase
the thermal stability of the fibers, but also increased the average fiber diameters, which gave stronger fibers. The DSC results
indicated that the melting temperature (Tm) of the fibers was increased from 256 to 270 °C with the addition of boron. XRD
peak patterns showed that after further heat treatment at 800 °C, zirconia exists in two phases of tetragonal and monoclinic
modifications. Moreover, alumina does not transform into the γ-Al2O3 and θ-Al2O3 phase at 800 °C. The SEM appearance of the fibers showed that the addition of boron resulted in the formation of crosslinked
bright surfaced fibers. 相似文献
3.
Cigdem Alev Ozel Khalid Mahmood Khawar Seher Karaman Mevlude Alev Ates Orhan Arslan 《Scientia Horticulturae》2008
Ornithogalum ulophyllum Hand.-Mazz. with beautiful white flowers is an important medicinal and ornamental plant of the Middle Eastern countries and need exploitation for commercial propagation. The study reports in vitro mass proliferation of bulblets achieved from twin scales and “in vitro regenerated bulblet” explants on MS medium supplemented with various concentrations of BAP–NAA. The best regeneration on twin scales and “in vitro regenerated bulblets” was obtained on MS medium containing 2 mg l−1 BAP–0.5 mg l−1 NAA and 2 mg l−1BAP–1 mg l−1 NAA, respectively. However, bulb scales seemed to be more potent for bulblet regeneration. A large number of the developing bulblets rooted on the regeneration medium. Remaining non-rooting bulblets were rooted on MS medium containing 1 mg l−1 NAA. All plants were acclimatized in the environmental chamber for 4 weeks and were transferred to the greenhouse for flowering. Regenerated bulblets developed into morphologically normal plants. 相似文献
4.
Evaluation of pathological changes in broilers during chronic aflatoxin (50 and 100 ppb) and clinoptilolite exposure 总被引：3，自引：0，他引：3
This study was conducted to evaluate the pathological changes in broilers fed a diet containing low-levels of aflatoxin (AF) and clinoptilolite (CLI) until 42 days of age. A total of 576 one-day-old Ross-308 type broiler chicks were treated with varying levels of AF and CLI (15 g kg(-1)). The gross and histopathological changes in the liver, kidneys, spleen, thymus and bursa of Fabricius were investigated and relative organ weights were calculated. Compared to controls, significant changes (P<0.05), such as slight to moderate hydropic degeneration and/or fatty change (8 cases of 10), bile-duct hyperplasia (7 of 10) and periportal fibrosis (5 of 10), were found in chicks fed 100 ppb AF-containing diet. No gross-pathological changes were observed in any treatments. The addition of CLI to the 100 ppb AF-containing diet significantly decreased the number of affected broilers and/or the severity of lesions (hydropic degeneration and bile-duct hyperplasia) in the livers (P<0.05). The addition of CLI to the AF-free diet did not produce any significant lesions compared with the controls. 相似文献
5.
Kara ME Karaman ZC Dabanoglu I Ocal MK 《DTW. Deutsche tier?rztliche Wochenschrift》2001,108(4):164-167
Computed tomographic examination of the trachea was performed on 18 mix-breed dogs. The measurements were taken from 5 segments from which the first 3 segments were extrathoracic trachea, 1 segment at the level of thoracic inlet and 1 segment intrathoracic trachea. The inner and outer transverse and vertical diameters were measured at each of the segments. The cross-sectional area of the lumen, ratio of the inner and outer transverse and vertical diameters were also calculated. It was seen that the diameters and cross-sectional area of the lumen decreased gradually in the extrathoracic trachea from larynx to thoracic inlet but these values showed an increase in the intrathoracic trachea. Correlation coefficients between the inner diameters, cross-sectional lumen areas and the body weight was calculated and a high correlation was found between the inner transverse and vertical diameters and the cross-sectional area of the lumen except between the inner transverse and vertical diameters at the level of S5 segment. 相似文献
6.
S. Kapur C. Karaman E. Akca M. Aydin U. Dinc E. A. FitzPatrick M. Pagliai D. Kalmar A. R. Mermut 《CATENA》1997,28(3-4)
Vertisols formed on different parent materials from Turkey (Aslanpınarı and Begde
soil series) and Israel (Akko soil series) were studied for their microstructure. The Aslanpınarı and Begde
soils showed similar spheroidal microstructural development in the ABss horizons, whereas the spheres of Akko differed by being smaller and lacking granostriation. Micromorphometric analyses of the three soils revealed similar pore characteristics within and between the aggregates of the ABss horizons. Presence of the spheroidal microstructural units and increase of palygorskite and vermiculite in the ABss horizon of the Be
de
soil, which is in contrast with increasing smectite in the Aslanpınarı and Akko soils, links with an increase in the structural stability index and an increase in the hydraulic conductivity. 相似文献
7.
8.
İ. Alper İşoğlu Cemre Demirkan Mine Gül Şeker Kadriye Tuzlakoğlu Sevil Dinçer İşoğlu 《Fibers and Polymers》2018,19(11):2229-2236
This study aimed to produce poly(4-vinyl pyridine) and hydroxypropyl methacrylamide (HPMA)-based bilayer wound dressings materials enhancing healing mechanism for the wounds which have self-healing problem and high infection risk. These materials were designed to protect wound from secondary traumas caused microorganism invasion and do not have toxic substance release problem. Synthesis of quaternary poly(4-vinyl pyridine) (poly(Q4-VP)) which is the antibacterial layer of wound dressing material was carried out in two stages. At first stage, poly(4-vinyl pyridine) polymer was synthesized from 4-vinyl pyridine monomer by free radical polymerization. Then, poly(Q4-VP) was synthesized from poly(4-VP) by alkylation reaction with 6-bromocaproic acid. Resulted polymer was structurally characterized by FT-IR. The macroporous spongy structure, as the lower layer of wound dressing material, was prepared by cryogelation of HPMA. Then, the antibacterial polymer was electrospun onto the cryogel structure and bilayered material was obtained. Cryogel structure, fiber morphology and layer integration was examined by SEM. In order to enhance wound healing process, ascorbic acid (vitamin C) was loaded to cryogel layer and release was followed by spectrophotometrically. The antimicrobial properties of the materials were examined against Escherichia coli, Staphylococcus aureus and Candida albicans, respectively. According to the results, bilayered, antibacterial and antifungal against Staphylococcus aureus and Candida albicans, temporary wound dressings which can stimulate wound healing and have high swelling capacity were obtained successfully. 相似文献
9.
Determination of quality parameters such as lignin and extractive content of wood samples by wet chemistry analyses takes
a long time. Near-infrared (NIR) spectroscopy coupled with multivariate calibration offers a fast and nondestructive alternative
to obtain reliable results. However, due to the complexity of the NIR spectra, some wavelength selection is generally required
to improve the predictive ability of multivariate calibration methods. Pinus brutia Ten. is the most growing pine species in Turkey. Its rotation period is around 80 years; the forest products industry has
widely accepted the use of Pinus brutia Ten. because of its ability to grow on a wide range of sites and its suitability to produce desirable products. Pinus brutia Ten. is widely used in construction, window door panel, floor covering, etc. Determination of lignin and extractive content
of wood provides information to tree breeders on when to cut and how much chemicals are needed for the pulping and bleaching
process. In this study, 58 samples of Pinus brutia Ten. trees were collected in Isparta region of Turkey, and their lignin and extractive content were determined with standard
reference (TAPPI) methods. Then, the same samples were scanned with near-infrared spectrometer between 1,000 and 2,500 nm
in diffuse reflectance mode, and multivariate calibration models were built with genetic inverse least squares method for
both lignin and extractive content using the concentration information obtained from wet standard reference method. Overall,
standard error of calibration (SEC) and standard error of prediction (SEP) ranged between 0.35% (w/w) and 2.40% (w/w). 相似文献
10.
Torben Schulz‐Streeck Joseph O. Ogutu Andrés Gordillo Zivan Karaman Carsten Knaak Hans‐Peter Piepho 《Plant Breeding》2013,132(6):532-538
Genomic selection has been routinely implemented in plant breeding in two stages. The first stage usually omits the marker information and estimates adjusted means of genotypes across environments. The second stage uses the adjusted means to predict genomic breeding values. However, if the effects of markers vary substantially between different environments, it may be important to account for this variation for varieties adapted to different environments. Using two maize data sets, we investigated whether modelling the marker‐by‐environment interaction can improve the predictive ability of genomic selection relative to modelling genotype‐by‐environment interaction alone. Modelling the marker‐by‐environment interaction did not substantially increase the predictive ability relative to modelling only the genotype‐by‐environment interaction for the two tested data sets. Thus, genomic selection, carried out in a stagewise fashion, such that the marker information is omitted until the last stage of the process, may suffice for most practical purposes. Moreover, predictive ability did not reduce substantially even when the number of markers with consistent effects across environments used for genomic prediction was reduced to about 50. 相似文献