The Anatomy of the Arterial Supply of the Thoracic Limb of the Porcupine (Hystrix cristata)     

Sadik Yilmaz  Ali Aydin  & Gürsel Dinç 《Anatomia, histologia, embryologia》2001,30(5):273-275

The aim of this study was to investigate the anatomy of the arterial supply and branches of the thoracic limb of the porcupine. With this aim, five (three male and two female) adult porcupines were used. The vascular tree of the thoracic limb was injected through the common carotid arteries with coloured latex. The a. thoracica externa arose from the a. axillaris at the level of the fourth rib. It divided into two branches and went to the m. cutaneus trunci and the m. pectoralis ascendens. The a. subscapularis came off the a. thoracodorsalis. Later, the a. circumflexa humeri caudalis et cranialis, the three muscular branches and the a. circumflexa scapulae arose from the a. subscapularis. The a. profunda brachii arose together with the a. bicipitalis from the same truncus. The a. collateralis ulnaris left from the a. brachialis independently. Rete carpi dorsale was formed by the a. radialis. the r. carpeus dorsalis of the a. collateralis ulnaris and the a. interossea caudalis. Arcus palmaris profundus was formed by the r. profundus of the a. interossea caudalis and the r. palmaris profundus of the a. radialis. In conclusion, despite a partial resemblance to that in the rat, the distribution of the thoracic limb arteries in the porcupine was found to be completely different from that of other mammals. These findings represent, to our knowledge, the first study on the distribution of thoracic limb arteries in the porcupine.  相似文献   

Etiologic studies of abortion in sheep with special reference to detection of Brucella, Campylobacter, Salmonella, Listeria, Leptospira and Chlamydia     

M Arda  W Bisping  N Aydin  E Istanbulluoglu  O Akay  M Izgür  Z Karaer  S Diker  G Kirpal 《Berliner und Münchener tier?rztliche Wochenschrift》1987,100(12):405-408

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Hemorrhagic syndrome-like disease in calves with bovine viral diarrhea and mucosal disease complex     

Dabak M  Karapinar T  Gulacti I  Bulut H  Kizil O  Aydin S 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2007,21(3):514-518

BACKGROUND: Bovine viral diarrhea virus (BVDV) infection is one of the causes of hemorrhagic diathesis in cattle but there have been limited field studies about that condition. HYPOTHESIS: To identify the cause of hemorrhagic diathesis in calves and describe its clinical findings. ANIMALS: Five calves from a farm with 150 dairy cows. METHODS: Clinical examination of the calves was performed. After blood samples were obtained from 2 calves, whole blood, sera, and leukocyte samples were used for hematologic and hemostatic examinations, neutralization tests, virus isolation, and viral genome sequencing. RESULTS: The calves had moderate pyrexia, dullness, serous or mucous nasal discharge, and petechial and ecchymotic hemorrhages on mucosal surfaces. Severe thrombocytopenia and anemia were identified on hematologic examinations. All calves died within 10 days of the onset of clinical signs. Virologic examinations identified BVDV as the causative agent of the disease. CONCLUSIONS AND CLINICAL IMPORTANCE: This paper identifies a hemorrhagic syndrome-like disease in calves with bovine viral diarrhea and mucosal disease complex in Turkey.  相似文献   

Evapotranspiration of orange trees in greenhouse lysimeters   总被引：3，自引：0，他引：3  

Sheng Yang  Mehmet Aydin  Tomohisa Yano  Xin Li 《Irrigation Science》2003,21(4):145-149

Eight-year-old Murcott orange trees (Citrus sinensis (L.) Murcott) grown in greenhouse lysimeters filled with sandy soil were used to investigate seasonal variations in daily and hourly evapotranspiration. The study was conducted in Japan during the summer of 2000 and the winter of 2001. Weighing lysimeters of 1.5 m diameter and 1.6 m depth (three replications) planted with a tree were irrigated when average soil moisture in 0-120 cm of soil depth was depleted to below 70% of the field capacity (FC). Evapotranspiration (ET) showed significant seasonal variations. Average ET rate exceeded 4.4 mm/day in the summer period, and dropped to 0.6 mm/day in the winter months. The average seasonal crop coefficient (K_C) was 0.91 and 0.75 during the summer and winter periods, respectively. Hourly variations in ET exhibited a time difference with season. The time of maximum ET was 0900 hours for winter and 1200 hours for summer. Moreover, some evaporative losses of soil water occurred even during the night in both summer and winter seasons. Soil evaporation (E) was 33% of ET during the winter period, while E was only 11% of ET during summer. Maximum water uptake by the trees was found at a depth of 30-60 cm, and soil water depletion was observed in the 0-120 cm depth of the profile during the summer period. However, during the winter season, water depletion occurred only from 0-30 cm depth of the soil profile.  相似文献   

Divalent metal nanoparticles     

Devries GA  Brunnbauer M  Hu Y  Jackson AM  Long B  Neltner BT  Uzun O  Wunsch BH  Stellacci F 《Science (New York, N.Y.)》2007,315(5810):358-361

Nanoparticles can be used as the building blocks for materials such as supracrystals or ionic liquids. However, they lack the ability to bond along specific directions as atoms and molecules do. We report a simple method to place target molecules specifically at two diametrically opposed positions in the molecular coating of metal nanoparticles. The approach is based on the functionalization of the polar singularities that must form when a curved surface is coated with ordered monolayers, such as a phase-separated mixture of ligands. The molecules placed at these polar defects have been used as chemical handles to form nanoparticle chains that in turn can generate self-standing films.  相似文献   

Similarities and differences of the spheroidal microstructure in Vertisols from Turkey and Israel     

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   

Role of Phosphatases,Iron Reducing,and Solubilizing Activity on the Nutrient Acquisition in Mixed Cropped Peanut and Barley     

Aydin Gunes  Ali Inal  Nuray Cicek  Figen Eraslan 《Journal of plant nutrition》2013,36(10):1555-1568

The effect of interspecific complementary and competitive root interactions and rhizosphere effects on primarily phosphorus (P) and iron (Fe) but also nitrogen (N), potassium (K), calcium (Ca), zinc (Zn), and manganese (Mn) nutrition between mixed cropped peanut (Arachis hypogaea L.) and barley (Hordeum vulgare L.). In order to provide more physiological evidence on the mechanisms of interspecific facilitation, phosphatase activities in plant and rhizosphere, root ferric reducing capacity (FR), Fe-solubilizing activity (Fe-SA), and rhizosphere pH were determined. The results of the experiment revealed that biomass yield of peanut and barley was decreased by associated plant species as compared to their monoculture. Rhizosphere chemistry was strongly and differentially modified by the roots of peanut and barley and their mixed culture. In the mixed cropping of peanut/barley, intracellular alkaline and acid phosphatases (AlPase and APase), root secreted acid phosphatases (S-APase), acid phosphatases activity in rhizosphere (RS-APase), and bulk soil (BS-APase) were higher than that of monocultured barley. Regardless of plant species and cropping system, the rhizosphere pH was acidified and concomitantly to this available P and Fe concentrations in the rhizosphere were also increased. The secretion Fe-solubilizing activity (Fe-SA) and ferric reducing (FR) capacity of the roots were generally higher in mixed culture relative to that in monoculture treatments which may improve Fe and Zn nutrition of peanut. Furthermore, mixed cropping improved N and K nutrition of peanut plants, while Ca nutrition was negatively affected by mixed cropping.  相似文献   

Zeolite influences on nitrate leaching,nitrogen-use efficiency,yield and yield components of canola in sandy soil     

Majid Aghaalikhani  Majid Gholamhoseini  Aria Dolatabadian  Aydin Khodaei-Joghan  Kamal Sadat Asilan 《Archives of Agronomy and Soil Science》2013,59(10):1149-1169

With regard to the low cation-exchange capacity and large saturated hydraulic conductivity of sandy soils, a field experiment was carried out in 2006–2007 to determine the impact of zeolite on nitrogen leaching and canola production. Four nitrogen (N) rates (0, 90, 180, and 270 kg ha^–1) and three zeolite amounts (3, 6 and 9 t ha^?1) were included as treatments. The results demonstrated that the highest growth parameters and seed yield were attained with 270 kg N ha^?1 and 9 t zeolite ha^?1. However, the highest and the lowest seed protein percentage and oil content were obtained with 270 kg N ha^?1 accompanied by 9 t zeolite ha^?1, respectively. Nitrate concentration in drained water was affected by nitrogen and zeolite. The lowest and highest leached nitrate values were found in control without N and zeolite (N₀Z₀) and in treatments with the highest N supply without zeolite (N₂₇₀Z₀), respectively. In general, nitrogen-use efficiency decreased with an increase in N supply. Application of 9 t zeolite ha^?1 showed higher nitrogen use efficiency than other zeolite amounts. Also, application of more N fertilizer in soil reduced nitrogen uptake efficiency. In total, application of 270 kg N ha^?1 and 9 t zeolite ha^?1 could be suggested as superior treatment.  相似文献   

The Effects of Lithology on Water Pollution: Natural Radioactivity and Trace Elements in Water Resources of Eskisehir Region (Turkey)     

Galip Yuce  Didem Ugurluoglu  Alime T. Dilaver  Turgay Eser  Mesut Sayin  Mert Donmez  Sakir Ozcelik  Funda Aydin 《Water, air, and soil pollution》2009,202(1-4):69-89

The high radioactivity and trace elements in drinking water are common concerns for human health. The aim of this study was to investigate the eligibility of groundwater for drinking purpose in terms of both radioactivity and trace element contents in Eskisehir Region (Turkey). The study area is located in a highly populated residential area where water supply is mostly met from groundwater. The area is about 20,000 km², where igneous, metamorphic, and sedimentary rocks are exposed. The 209 water samples collected from 84 water resources (including thermal waters) were analyzed with respect to major ions, trace elements, and radioactivity (gross alpha and gross beta) during both in wet and dry seasons. Based on the analysis results, trace elements in 49 samples of 84 water resources were over the limits of Code TS 266 1997 (Turkish Drinking Water Standards) and WHO 1993 standards. Particularly, Fe, Mn, Al, As, Ba, Zn, Cr, Cu, and B ion concentrations exceeded the limits. The gross alpha values in 18 locations and gross beta values in three locations also exceeded the limits of aforementioned standards in terms of radioactivity (gross alpha?=?0.1 Bq L^?1; gross beta?=?1 Bq L^?1). Furthermore, water radioactivity levels were close to the allowable limits in 33 water resources. The obtained results explicitly indicate that there is a strong relationship between the higher radioactivity–trace element contents and geochemical composition of rocks, which controls the radioactivity and trace element concentrations present in the aquifer.  相似文献   

Genetic analysis of Turkish apple germplasm using peroxidase gene-based markers     

O. Gulsen  Suat Kaymak  Serif Ozongun  Aydin Uzun 《Scientia Horticulturae》2010

Plant peroxidases belong to a multigene family and posses highly conserved domains allowing to design oligonucleotide primers to amplify DNA sequences coding for peroxidases from plants with unsequenced genomes. Peroxidase gene-based polymorphism among Malus species, and correlation between peroxidase markers were deduced in this study. Turkish apple germplasm was evaluated using 14 peroxidase specific primers. Targeted-PCR amplification of genomic DNA from 192 apple genotypes available in the Turkish genetic resources yielded polymorphisms giving a similarity range from 0.56 to 0.98 with a mean of 0.77. Based on the POGP gene polymorphism, two distinct clusters were detected among the apple accessions, suggesting different evolutionary pathway. Correlation estimates as an indication of linkage disequilibrium between POGP markers ranged from −0.22 to 0.90, suggesting that few POGP markers were clustered and the remaining POGP markers evenly distributed throughout the apple genome. These results demonstrate that primers targeting the peroxidase gene family can be used to study genotypic diversity and evolutionary relationships on an intra- and inter-specific basis.  相似文献