Toxic megacolon is characterized by extreme inflammation and distention of the colon. Common symptoms are pain, distention ...
MedlinePLUS
A device and method of rapidly quantifying the relative distention of the bladder in a human subject
NASA Technical Reports Server (NTRS)
Neurotransmission requires Ca(2+)-dependent release of secretory products through fusion pores that open and reclose (partial membrane distention) or open irreversibly (complete membrane distention). It has been challenging to distinguish between these release modes; however, in the work presented here, we were ...
PubMed
... that accelerates the wetting of the membranes by aqueous electrolyte solutions, thus reducing the start up time for metal/hydrogen peroxide-based ...
DTIC Science & Technology
Background. A theoretical model analysis of stress in the vestibular membranes has identified a geometrical stress factor incorporating shape, size, and thickness that can be used to assess peak stress in the various chambers. Methods. Using published measurements of the toadfish vestibular membranes made during surgery, the geometrical stress factor can ...
PubMed Central
... acceleration, the content of histamine increases in the mucous membrane of the intestine, and decreases considerably in the lungs and tissues of ...
Decay accelerating factor (DAF) belongs to a novel group of membrane proteins anchored to the cell surface by a glycophospholipid membrane anchor that is covalently attached to the carboxyl terminus of the protein. The last 37 amino acids of membrane DAF, when fused to the carboxyl terminus of a secreted protein, ...
... with salt. In the non-pregnant sheep, distention of the vagina results in an increased release of oxytocin. This response ...
The use of a thin membrane to suspend an (inertial fusion energy) fuel capsule in a holder for injection into a reactor chamber is investigated. Capsule displacement and membrane deformation angle are calculated for an axisymmetric geometry for a range of membrane strain and capsule size. This information is used to calculate maximum ...
Energy Citations Database
The class of problems related to the use of heavy ion accelerators for the production of nuclear track membranes, a new type of polymer micro- and ultrafiltration material, is considered. The problem of forming a porous structure with required parameters ...
National Technical Information Service (NTIS)
A propulsion system is proposed that is based on acceleration of ions emitted from a thin, solid-state electrochemical ceramic membrane. ...
NASA Website
Jan 1, 1982 ... In addition, the heart commences to function and the extraembryonic membranes that compartmentalize the egg contents form. ...
We have designed and built electrostatically actuated microvalves compatible with integration into a PDMS based microfluidic system. The key innovation for electrostatic actuation was the incorporation of carbon nanotubes into the PDMS valve membrane, allowing for electrostatic charging of the PDMS layer and subsequent discharging, while still allowing for significant ...
Distention of the proximal colon may have inhibitory or excitatory effects on the rectum and vice versa. The reflexes between the proximal colon and the rectum have not been well studied due to difficulties in accessing the proximal colon. The aim of this study was to investigate the reflex responses and their mechanisms between the proximal colon and the rectum in ...
The use of a thin membrane to suspend an (inertial fusion energy) fuel capsule in a holder for injection into a reactor chamber is investigated. Capsule displacement and membrane deformation angle are calculated for an axisymmetric geometry for a range of...
Homogeneous and radiatively grafted membranes were evaluated as separators for the zinc/ferricyanide storage battery. An accelerated aging test demonstrated that membrane failures could be attributed to both mechanical and chemical mechanisms. A series of...
PurposeTo evaluate changes in urine markers and symptom scores after bladder distention in interstitial cystitis (IC) patients.Materials and MethodsSubjects were 33 new patients with no prior IC treatments. Urine specimens were taken before and one month after bladder distention. University of Wisconsin (UW) symptom scores were done the same day as the ...
An animal�s response to a stimulus depends upon many factors such as age, hormonal state, experience, and its behavioral state. For example, an animal may suppress a behavior that is inappropriate or incompatible with its current state. In this study, we show that as a medicinal leech feeds, the distention that it incurs inhibits its expression of swimming. ...
... Rapid distention of the myometrium produces a quick contraction followed by inoreoed rhytbhio activity, the frequency at which is increased with the ...
... Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT ... PARTICLES, TRANSLATIONS, EXPANSION, FLUIDIZED BED PROCESSES, FILLERS. ...
The measurement of the abdominal girth may be helpful in diagnosing abdominal distention, which commonly results from intestinal gas. ...
Conserved and Cooperative Assembly of Membrane-Bound R-Helical States of Islet Amyloid Polypeptide protein into -sheet-rich amyloid fibers is the hallmark of a number of serious diseases. Precursors membrane. Membrane bilayers are reported to accelerate the rate of amyloid assembly. Furthermore, ...
E-print Network
Young C57BL/6N mice were injected (ip) with trimethyltin chloride at a dosage of 3.0 mg/kg body wt. Animals were sacrificed between 48 to 72 hr postinjection by means of intracardial perfusion of saline solution followed by 2.5% buffered glutaraldehyde. For light microscopy, the cords were further fixed in 10% buffered formalin and embedded in Paraplast. For electron microscopy, tissue samples ...
Sixty-two autogenous cephalic vein segments were grafted into the femoral arteries of 31 mongrel dogs, the left side receiving non-distended (control) grafts and the right side distended (experimental) grafts. Distending media were heparinized blood and saline. Veins were distended at 600 mm Hg for 2 minutes. Specimens were taken at intervals from 15 minutes to 3 months, and were studied by gross ...
A new treatment method for ion exchange membranes used in semi-fuel cells that accelerates the wetting of the membranes by aqueous electrolyte solutions, thus reducing the start up time for metal/hydrogen peroxide-based semi-fuel cells. Specifically, a Na...
Excessive stretch of the bladder can lead to wall thickening including the growth of bladder smooth muscle cells (BSMC). Only three phospho-proteins (JNK, p38, and PI3K) have been previously shown to participate in stretch-induced BSMC growth. CD1 mouse bladders were hyper- or non-distended by our ex vivo bladder distention model and screened, by a commercial screening method, ...
The aim of this study was to investigate the effects and mechanisms of gastric electrical stimulation (GES) on proximal stomach distention-induced visceral sensitivity. Isobaric gastric distention was performed using a barostat system in 8 normal and 6 vagotomized dogs and animal behaviors were noted and graded. The normal dogs were studied in 4 sessions: ...
An ion thrusting system is disclosed comprising an ionization membrane having at least one area through which a gas is passed, and which ionizes the gas molecules passing therethrough to form ions and electrons, and an accelerator element which accelerate...
Positive ions leaving the membrane holes would be accelerated in this electric ... in graphite and uranium-carbide zirconium carbide (UC-ZrC) in graphite, ...
Positive ions leaving the membrane holes would be accelerated in this electric field. ... as well as uranium oxide (UO2) in tungsten (W) metal cermet. ...
... I, Poutanen M, Alitalo K. Bmx tyrosine kinase transgene induces skin hyperplasia, inflammatory angiogenesis, and accelerated wound healing. ...
... EXPECTANCY(SERVICE LIFE), *DEGRADATION, MILITARY ... RANGE(TIME), HIGH STRENGTH, ACCELERATED TESTING, ROOFS. ...
... by the end of their expected performance life ... of membrane- type fore- vacuum pump of ... required computed partial pressure values, the admixture ...
Further, it can also be shown that a pressure differential across the membran- ous duct produces a cupular response which is related to angular acceleration ...
, the behavior of cardio- lipin was consistent with reports of PPARa-dependent accelerations in cardiolipin
The purpose of this investigation was to determine the practical and clinically useful aspects of a portable 'artificial kidney' that would require no dialysis fluid. The movement of water and small molecules across an artificial membrane was accelerated ...
Phosphoenolpyruvate carboxylase (PEPC) purified from maize (Zea mays L.) leaves associates with maize leaf chloroplast membrane in vitro. The binding of PEPC to the membrane results in enzyme inactivation. A protein isolated from a maize leaf chloroplast membrane preparation inactivated PEPC. Treatment with ...
Application of ultrasound to accelerate the dialysis separation of electrolytes through a membrane was studied with ultrasonic dialysis equipment. The experiments were conducted with cellophane membrane and KCl solution, CH3COONa solution, and a mixture of KCl and saponin solutions. It was found that the diffusion velocity of ...
NASA Astrophysics Data System (ADS)
Coeliac disease (CD) is an autoimmune disorder which leads to chronic inflammation of the gut. Furthermore, CD is associated with upper gastrointestinal malignancies, particularly lymphoma of the small intestine. Besides lymphoma, an increased frequency of associated small bowel carcinoma has been described. Here we report the case of a 70-year-old male suffering from CD who was treated with a ...
Cellular membranes are composed of proteins and glyco- and phospholipids and play an indispensible role in maintaining cellular integrity and homeostasis, by physically restricting biochemical processes within cells and providing protection. Membrane proteins perform many essential functions, which include operating as transporters, adhesion-anchors, ...
Some technical parameters and experimental results of heavy ion irradiation to produce nuclear track membrane at HI-13 tandem accelerator at CIAE are given, including the selection of heavy ions, the effect of energy and beam intensity on properties of nu...
... histopathologic diagnosis in this pigeon was a Sertoli cell tumor of the right testis. Discussion Abdominal distention in birds may be caused by organomegaly, ascites, obesity, egg binding, air sac disten...
NBII National Biological Information Infrastructure
This abdominal x-ray shows thickening of the bowel wall and swelling (distention) caused by a blockage (obstruction) in the intestines. A ...
of lung tissue occurs when there is rapid distention of the lungs by more ...... cosmonaut in flight: increased CO2 content in the lungs, blood, and tissues ...
Investigating the localization of gastric sensation within the brain is important for understanding the neural correlates of satiety. Previous rodent studies have identified the brain-stem and hypothalamus as key mediators of gastric distention-induced satiation. Although, recent blood oxygen level-dependent functional magnetic resonance imaging (BOLD fMRI) studies in humans ...
The rate at which X-ray structures of membrane proteins are solved is on a par with that of soluble proteins in the late 1970s. There are still many obstacles facing the membrane protein structural community. Recently, there have been several technical achievements in the field that have started to dramatically accelerate structural ...
The average service life of roofing membranes used in low-slope applications on U.S. Army buildings is estimated to be considerably shorter than the industry-presumed 20-year design life, even when installers carefully adhere to the latest guide specifica...
requirements Kynar� PVDF Engineering thermoplastic High chemical resistance High electrochemical stability No H Kynar� Blending Casting Membrane #12;5 M31 Summary of Major Findings I. Membrane High conductivity achieved Accelerated ex-situ test developed to mimic in-situ degradation #12;Blending of Kynar with Various
The behavior of platinum dissolution and deposition in the polymer electrolyte membrane of a membrane-electrode-assembly (MEA) for a proton-exchange membrane fuel cell (PEMFC) was studied using potential cycling experiment and high-resolution transmission electron microscopy (HRTEM). The electrochemically active surface area decreased ...
Thin PTFE membranes were prepared by coating the PTFE dispersion onto the aluminum films. Thus the thin crosslinked PTFE (RX PTFE) membranes were obtained by means of electron beam irradiation above the melting temperature of PTFE under oxygen-free atmosphere. The RX PTFE membranes were pre-irradiated and grafted by styrene with or ...
no sex differ- ence in analgesia using systemic fentanyl or buprenorphine in the hot plate or tail-induced hyperalgesia (20, 84), but buprenorphine was more potent in females than males during capsaicin induced thermal, thereby stabilizing the response (62). Subsequent distentions were run in trials of 6 distentions
BackgroundFunctional abdominal pain syndrome (FAPS) has chronic unexplained abdominal pain and is similar to the psychiatric diagnosis of somatoform pain disorder. A patient with irritable bowel syndrome (IBS) also has chronic unexplained abdominal pain, and rectal hypersensitivity is observed in a majority of the patients. However, no reports have evaluated the visceral sensory function of FAPS ...
This study aimed to measure brain activation during gastric distention as a way to investigate short-term satiety. We estimated regional cerebral blood flow with positron emission tomography (15O-water) during gastric balloon inflation and deflation in 18 healthy young women. The contrast between inflated minus deflated conditions showed activation in the following four key ...
The outermost epidermal layer, the stratum corneum (SC), is the main skin barrier. Studies of SC model systems enable characterization of the influence of individual lipids on the organization of the SC lipid matrix, which is the main pathway of water through the skin. This work presents a neutron diffraction study of the SC model membranes based on short-chain ceramide 6 with ...
One key role of many cellular membranes is to hold a transmembrane electrochemical ion gradient that stores free energy, which is used, for example, to generate ATP or to drive transmembrane transport processes. In mitochondria and many bacteria, the gradient is maintained by proton-transport proteins that are part of the respiratory (electron-transport) chain. Even though our ...
We evaluated the efficiency of transplantation of cultured human allofibroblasts onto tympanic membrane damaged by mine explosion in combination with Tampograss dressing (Paul Hartman). Transplantation of cultured human allofibroblasts was effective in 100% cases. Application of the film with fibroblasts onto perforation occupying from 1/4 to 1/2 of the tympanic ...
In a previous study of mutants in fatty-acid desaturation of Synechocystis PCC6803, it was demonstrated that the photoinhibition of photosynthesis at low temperature in vivo is tolerated by cells as a result of the unsaturation of glycerolipids of thylakoid membranes. Since the extent of photoinhibition of photosynthesis in vivo depends on a balance between the photoinduced ...
Decay-accelerating factor (DAF) from human red cell membranes was purified by a two-step procedure involving anion exchange and immunoaffinity chromatography. The DAF preparations were purified to homogeneity as judged by silver staining. In several experiments, the final product yields were approximately 23% of the total DAF present in the initial ...
Accelerated laboratory tests and field performance evaluations indicate that butyl and ethylene propylene diene monomer (EPDM) rubber sheeting can be used satisfactorily as buried membrane and exposed lining for canals and reservoirs. For successful use a...
Many roofs are replaced because water accumulates in portions of the roofing system.These accumulations can cause dripping, accelerated membrane failure, poor thermal performance, the threat of structural decay, and the depreciation of building assets. Tr...
Liquid ventilation of the lungs to diminish acceleration/deceleration stresses was studied. Since ions permeating the alveolo capillary barrier might induce serious electrolyte disturbances in the serum, the permeability of the alveolo-capillary membrane ...
The fabrication of nanometric pores with controlled size is important for applications such as single molecule detection. We have recently suggested the use of focused electron beam induced etching (FEBIE) for the preparation of such nanopores in silicon nitride membranes. The use of a scanning probe microscope as the electron beam source makes this technique comparably ...
SummaryDecades ago it was proposed that exocytosis involves invagination of the target membrane, resulting in a highly localized site of contact between the bilayers destined to fuse. The vesicle protein synaptotagmin-I (syt) bends membranes in response to Ca2+, but whether this drives localized invagination of the target ...
Polymeric membranes are widely used in aeration systems for biological treatment. These membranes may degrade over time and are sensitive to fouling and scaling. Membrane degradation is reflected in a decline in operating performance and higher headloss, resulting in increased energy costs. Mechanical property parameters, such as ...
The physiology and pathophysiology of the network of interstitial cells of Cajal associated with the deep muscular plexus (ICC-DMP) of the small intestine are still poorly understood. The objectives of the present study were to evaluate the effects of inflammation associated with Trichinella spiralis infection on the ICC-DMP and to correlate loss of function with structural changes in these cells ...
One of the important factors determining the lifetime of polymer electrolyte membrane fuel cells (PEMFCs) is membrane degradation and failure. The lack of effective mitigation methods is largely due to the currently very limited understanding of the underlying mechanisms for mechanical and chemical degradations of fuel cell membranes. ...
