background: since the treatments of long tracheal leisions are associated with some limitations, tissue enginered trachea is considered as an alternative option. this study aimed at preparing a composite scaffold, based on natural and synthetic materials for tracheal tissue engineering. methods: nine chitosan silk-based scaffolds were fabricated using three freezing rates (0.5, 1, and 2°c/min) ...

colorectal cancer is one of the most prevalent cancers in the world. it's survival expectancy depends on the time of diagnosis, stage and grade of the tumor, and general condition of the patient. survival expectancy of this type of cancer reveals the quality of diagnostic and therapeutic services in the community. to improve and standardize the treatment modalities in this field, much rese...

On this assumption many questions remain to be answered but some tentative conclusions can be drawn. 1. It would seem very likely that there is a transmissible HDA. 2. In this series, the time interval between the diagnosis of the infective patient and the diagnosis of the patient he in fected varied from 0 to 16 years, with a median of 3 years. The interval from the period of contact between t...

obesity with an increasing prevalence rate worldwide is correlated with multiple comorbidities. unfortunately, the currently available therapies such as the pharmacotherapy, bariatric surgery or gene-transfer technology are associated with a number of disadvantages including undesirable side effects, poor compliance or transient effectiveness. therefore, modifications of the lifestyle factors m...

sirolimus is a potent immunosuppressive agent administered as prophylactic agent to prevent rejection after organ transplantation. sirolimus must be used within a narrow therapeutic window. due to inter- and intra-variability, sirolimus blood concentrations may be affected, therefore, there is no possibility of predicting the sirolimus blood concentrations based on the dose patients received. t...

fecal microbiota transplant (fmt) research trials are growing in diverse intestinal and extraintestinal conditions that are thought to be either caused or correlated with gut microbiota dysbiosis. although, the mechanism by which the microbiota results in disease initiation or progression is not fully understood, it is speculated that restoring the symbiosis by fmt could have therapeutic benefits.

conclusion superselective tae for lgi bleeding has a high success and low complication rate. there are no statistical correlations between the clinical success rate and several variables, including embolic material, embolization site, and anticoagulant or antiplatelet medication. patients and methods fifty-two patients who underwent superselective tae for lgi bleeding between 2003 and 2011 were...

discussion splenic artery aneurysm is a very uncommon cause of page kidney and to our knowledge, it was the first case of its kind ever reported in the literature. introduction the page kidney is a rare phenomenon that refers to hypertension resulting from any external compression of a kidney by a hematoma, tumor, lymphocele, or urinoma. the activation of the renin-angiotensin-aldosterone syste...

This paper presents the improvements of hosting capacity photovoltaics (PVs) and electric vehicles (EVs) in a stand-alone microgrid (MG) with an energy storage system (ESS) by consider-ing model predictive control (MPC) based management system. The is configured as MG, including PVs, ESS, diesel generator (DG), several loads EVs. DG controlled to operate at rated power MPC algorithm used which ...

'3'CS y~ray sources, whic h have been proposed by the Pub lic Health Service as a subs titute for radium in th e treatme nt of ma lignant diseases, require suitab le calibration if cons is tency is to be achie ved in radiation treatme nt. Several '"'Cs so urces we re ca libra ted using a graphite cavi ty ionizat ion chambe r in an open·ai r geometry. The co ntribution of scatter from the room s...