BACKGROUND AND AIMS The sexual separation in dioecious species has interested biologists for decades; however, the cellular mechanism leading to unisexuality has been poorly understood. In this study, the cellular changes that lead to male sterility in the functionally dioecious cactus, Opuntia stenopetala, are described. METHODS The spatial and temporal patterns of programmed cell death (PCD...

We use an established neural network model of the primate visual system to show how neurons might learn to encode the gender of faces. The model consists of a hierarchy of 4 competitive neuronal layers with associatively modifiable feedforward synaptic connections between successive layers. During training, the network was presented with many realistic images of male and female faces, during wh...

Once a day push pull osmotic tablets containing pramipexole as an antiparkinson’s agent were developed and evaluated for in vivo efficacy. Push pull osmotic tablets are bilayered tablets consisting of pull layer (drug layer) and push layer (polymer layer) coated with semipermeable cellulose acetate membrane containing water leaching pore forming agents. To determine the in vivo efficacy of form...

Enhanced neurogenesis in the dentate gyrus of the hippocampus following seizure activity, especially status epilepticus, is associated with ectopic residence and aberrant integration of newborn granule cells. Hilar ectopic granule cells may be detrimental to the stability of dentate circuitry by means of their electrophysiological properties and synaptic connectivity. We hypothesized that statu...

An 8-year-old male neutered standard dachshund was presented with a slowly growing mass in the left submandibular salivary gland. Histopathological examination revealed a tumour that was composed of bilayered duct-like structures with an inner layer of ductal cells and an outer layer of clear cells. Both inner and outer cells in the greater part of the tumour exhibited low to moderate atypia an...

background: the aim of this study was to detect chlamydia trachomatis, mycoplasma hominis and ureaplasma urealyti cum from semen samples of infertile men by multiplex pcr and investigation of influence of bacteriospermia on semen parame ters. methods: semen samples of 200 infertile men were evaluated by multiplex pcr. in addition, analysis of semen parameters was performed according to the who ...

An 85 year male patient complaining epigastric discomfort was admitted. From the esophagogastroduodenoscopy, three early gastric cancer (EGCa) lesions had been identified and these were diagnosed as adenocarcinoma with poorly differentiated cell type. The patient underwent operation. From the post-operative mapping, however, additional 4 EGCa lesions were found, and the patient was diagnosed wi...

A study of transmittance and photoluminescence spectra on the growth of oxygen-rich ultra-thin ZnO films prepared by atomic layer deposition is reported. The structural transition from an amorphous to a polycrystalline state is observed upon increasing the thickness. The unusual behavior of the energy gap with thickness reflected by optical properties is attributed to the improvement of the cry...

Landfill sites are responsible for 6-12% of global methane emission. Methanotrophs play a very important role in decreasing landfill site methane emissions. We investigated the methane oxidation capacity and methanotroph diversity in lysimeters simulating landfill sites with different plant vegetations. Methane oxidation rates were 35 g methane m-2 day-1 or higher for planted lysimeters and 18 ...

An integrated input-output model is a useful tool for tracing environmental impacts of consumption. By including impacts originating from production layers of infinite order, the methodology is highly relevant for studies operating in a life-cycle context. In this work we show how the input-output approach can be used to enumerate the problem of sustainable consumption. From our recent as well ...