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We study the internal and external quantum efficiencies of vacuum-deposited organic light-emitting devices (OLED's). The internal quantum efficiency of OLED's based on tris-(8-hydroxyquinoline) aluminum is calculated to be 5.7 times the observed external quantum efficiency ?(e), consistent with measurements. We demonst... |
An aluminum wire-grid polarizer whose period is 0.39 microm has been fabricated on a quartz substrate by electron-beam direct-writing lithography and the lift-off method. By using the s -polarization resonance effect and optimizing structural parameters, characteristics such as a loss of less than 20% and an extinction... |
Some studies have indicated that the down-regulation of autophagy-related genes might result in tumorigenesis. This study was to investigate the expression and significance of autophagy-related genes Beclin1 and microtubule-associated protein 1 light chain 3 (MAPLC3) in human non-small cell lung cancer (NSCLC). |
To explore whether there are beta-amyloid protein (Abeta) binding elements in heart-beneficial recipe (HBR, a compound traditional Chinese herbal medicine), which can ameliorate the cytotoxicity of Abeta. |
A compact planar configuration for performing optical correlation is described. It comprises two pairs of identical holographic lenses and a holographic filter. Each pair of lenses is recorded on a single substrate; together the lenses perform exact Fourier transformation. The light between the lenses propagates inside... |
We report the laser performance of a low-propagation-loss neodymium-doped Gd(3)Ga(5)O(12) (Nd:GGG) waveguide fabricated by pulsed-laser deposition. An 8- mum -thick crystalline Nd:GGG film grown upon an undoped Y(3)Al(5)O(12) substrate lases at 1.060 and 1.062 microm when pumped by a Ti:sapphire laser operating at 740 ... |
Achieving a uniform fan-out energy distribution is critical to the successful applications of substrate guided-wave optical interconnects. Using Dupont photopolymer film HRF-600X00120, we investigated the optimum recording beam intensity for obtaining a large dynamic region of diffraction efficiency relative to exposur... |
We have designed, microfabricated, and characterized a diffractive optical element that reproduces the infrared spectrum of HF from 3600 to 4300 cm(-1) . The reflection-mode diffractive optic consists of 4096 lines, each 4.5mum wide, at 16 discrete depths relative to the substrate from 0 to 1.2 mum and was fabricated u... |
The aim of this study is to test the response of bone during cutting actions in dental procedures by sampling alkaline phosphatase (ALP) as a biological reference marker. ALP is found abundantly in bone tissue. In the first series of experiments a temporal-minimum quantity of ALP enzyme response was recorded, the obser... |
We show that a transversely uncooled atomic beam can be focused by a microsecond laser standing wave to form adatom density gratings on a substrate with good contrast ratio under a completely off-resonant condition (D?/? ~ 1) . |
Leptin-deficient ob/ob mice are a murine model for obesity, insulin resistance, and diabetes. Here we report that non-lethal abdominal irradiation (a single fraction of 850 cGy) to ob/ob mice retarded rapid gain of body weight, leading to amelioration of obesity without marked changes in food intake. This effect was ob... |
Influenza virus causes febrile respiratory illness. The infection results in significant mortality, morbidity and economic disruption. In this bioinformatics study, we used the NS1 (the conserved nonstructural) protein of influenza A virus to demonstrate its role in infectivity. Our in silico study revealed a new Casei... |
Telomeres and centromere are two essential features of all eukaryotic chromosomes. They provide function that is necessary for the stability of chromosomes. We developed a comprehensive database named TeCK, which covers a gamut of sequence and other related information about telomeric patterns, telomere repeat sequence... |
A wide range of web based prediction and annotation tools are frequently used for determining protein function from sequence. However, parallel processing of sequences for annotation through web tools is not possible due to several constraints in functional programming for multiple queries. Here, we propose the develop... |
Ultraviolet A photosensitivity is a debilitating symptom associated with the metabolic disorder Smith-Lemli-Opitz syndrome (SLOS). SLOS is a manifestation of the deficiency of 7-dehydrocholesterol reductase, an enzyme involved in the cholesterol biosynthesis. As a result several abnormal intermediary compounds are form... |
Protein S-acylation (also known as palmitoylation) is the reversible post-translational addition of acyl lipids to cysteine residues in proteins through a thioester bond. It allows strong association with membranes. Whilst prediction methods for S-acylation exist, prediction is imperfect. Existing protocols for demonst... |
To determine whether telmisartan reduces in-stent restenosis (ISR) after coronary angioplasty using bare metal stent (BMS) in patients with acute myocardial infarction (AMI) compared with an angiotensin converting enzyme (ACE) inhibitor. |
The exact pathophysiological mechanisms responsible for gastroesophageal reflux disease (GERD) remain unclear. Recent studies have shown that mucosal immune and inflammatory responses, characterized by specific cytokine and chemokine profiles, may underlie the diverse esophageal phenotypes of GERD. Interleukin 8 (IL-8)... |
We investigated whether pretreatment with geranylgeranylacetone (GGA), a potent heat shock protein (HSP) inducer, could inhibit proinflammatory cytokine liberation and nitric oxide (NO) production in lipopolysaccharide (LPS)-treated murine macrophages. The levels of NO and tumor necrosis factor-alpha (TNF-alpha) releas... |
An intracellular glucose oxidase was isolated from the mycelium extract of a locally isolated strain of Aspergillus niger UAF-1. The enzyme was purified to a yield of 28.43% and specific activity of 135 U mg(-1) through ammonium sulfate precipitation, anion exchange and gel filtration chromatography. The enzyme showed ... |
Uyaku (Lindera strychnifolia, Sieb. et Zucc.) is used in traditional Asian medicine to treat stomach and renal diseases, neuralgia, rheumatism, and aging. In this study, the effects of lyophilized extracts on hydroxyl ((.)OH) and superoxide (O(2) (.-)) radicals were examined using an electron spin resonance (ESR) spect... |
Gaucher disease is a recessively inherited lysosomal storage disorder, caused by deficiency of glucocerebrosidase activity. Affected individuals usually present with hepatosplenomegaly, anaemia, thrombocytopenia, and skeletal diseases. A wide range of neurological manifestations have also been recognized in Gaucher pat... |
Structural genomics efforts have led to increasing numbers of novel, uncharacterized protein structures with low sequence identity to known proteins, resulting in a growing need for structure-based function recognition tools. Our method, SeqFEATURE, robustly models protein functions described by sequence motifs using a... |
We present a novel method that combines protein structure information with protein interaction data to identify residues that form part of an interaction interface. Our prediction method can retrieve interaction hotspots with an accuracy of 60% (at a 20% false positive rate). The method was applied to all mutations in ... |
To investigate the effect of high mobility group box-1 protein (HMGB1) on immune function of human T lymphocytes in vitro and explore its potential role in cell-mediated immune dysfunction. |
To observe the mRNA and protein expression of suppressor of cytokines signaling protein 1/3 (SOCS-1/3) in the peripheral blood mononuclear cells (PBMCs) in patients with multiple organ dysfunction syndrome (MODS), and to explore the relationship between the SOCS expression and the patients' prognosis. |
Hepatitis B virus (HBV) e antigen (HBeAg) is translated from precore mRNA as a precore/core protein, which is post-translationally modified to give rise to the protein that is secreted into the serum. The G1862T mutation in HBV occurs in the bulge of the encapsidation signal within the pregenomic RNA. When the precore ... |
Circular permutation of a protein can be visualized as if the original amino- and carboxyl termini were linked and new ones created elsewhere. It has been well-documented that circular permutants usually retain native structures and biological functions. Here we report CPSARST (Circular Permutation Search Aided by Rama... |
There is a high prevalence of diabetes mellitus in the population of Saudi Arabia with the majority having non-insulin dependent diabetes mellitus (NIDDM). Random mid-day urine samples were obtained from 100 male [37 insulin dependants DM (IDDM) and 63 NIDDM] and 100 female (51 IDDM and 49 NIDDM) diabetic patients. Eig... |
Renal imaging with radio isotopes, or renal scintigraphy, allows the quantitative evaluation of renal function and urodynamics. Measurement of split renal function provides essential information in various situations of clinical practice. Angiotensin-converting enzyme inhibitor renography makes it possible to detect pa... |
Molecular evolution in bacteria is examined with an emphasis on cell division. For a bacterial cell to assemble and then divide required an immense amount of integrated cell and molecular biology structures/functions to be present, such as a stable cellular structure, enzyme catalysis, minimal genome, septum formation ... |
Hematological and blood biochemical parameters are of great importance in medical and veterinary practice. Unfortunately, normal reference range intervals for hematological and serum biochemical values in the tufted capuchin monkey (Cebus apella) have seldom been reported. The study reported here is based on data from ... |
The risk associated with the inhalation of platinum group element (PGE) emissions from vehicle exhaust catalysts (VECs) has been investigated by extracting road dust and milled auto catalyst with simulated lung fluids. Gamble's solution (representative of the interstitial fluid of the deep lung) and artificial lysosoma... |
The prognostic implications of NT-proBNP measured on admission in patients with the ST-elevation myocardial infarction (STEMI) are not so far well elucidated. The present investigation, performed in 198 STEMI patients submitted to percutaneous coronary intervention (PCI), was aimed at assessing the prognostic value of ... |
A decrease in the incidence of human immune deficiency virus-associated Kaposi sarcoma (HIV-KS) and regression of some established HIV-KS lesions is evident after the introduction of highly active anti-retroviral treatment (HAART), and is attributed to generalized immune restoration, to the reconstitution of human herp... |
A number of reports have demonstrated that rodents immunized with DNA vaccines can produce antibodies and cellular immune responses presenting a long-lasting protective immunity. These findings have attracted considerable interest in the field of DNA vaccination. We have previously described the prophylactic and therap... |
Despite the wide use of intravenous cyclophosphamide (IC) in lupus nephritis (LN), there are few published studies showing the effect of this treatment on renal histology. In this prospective study, we report the effect of IC on the evolution of histopathologic features in successive renal biopsies in patients with LN.... |
Treatment options for IgA nephropathy (IgAN) must take into consideration the pathophysiology, namely the role of eicosanoids, angiotensin II and monocyte-macrophages releasing reactive oxygen species (ROS). Angiotensin converting enzyme inhibitors and early corticosteroid usage are prime therapies. Tonsillectomy shoul... |
Although not all renal disease that diabetic patients develop is due to diabetic glomerulosclerosis, the great majority of patients progressing to advanced renal failure suffer from diffuse or nodular (Kimmelstiel Wilson's) diabetic glomerulosclerosis. This condition has become the single most frequent cause of end-sta... |
A prospective study of all native kidney biopsies performed over one year at the Riyadh Armed Forces Hospital, Riyadh, Saudi Arabia was conducted. During this period, 52 kidney biopsies were performed of which, 49 had adequate tissue. All biopsies were processed for light microscopy, immunofluorescence and electron mic... |
Oxidative stress, which results from an imbalance between reactive oxygen species (ROS) production and antioxidant defense mechanisms, is now a well recognized pathogenic process in hemodialysis (HD) patients that could be involved in dialysis-related pathologies such as accelerated atherosclerosis, amyloidosis and ane... |
In recent years, methods of on-line urea concentration and on-line urea clearance monitoring have been proposed for control of dialysis dose (Kt/V) and protein catabolic rate (PCR) in patients on regular dialysis therapy; these offer an alternative to the established methods of urea kinetics based on pre- and post-dial... |
Tubulo-interstitial kidney disease is characterized by moderate proteinuria < 1 g/day of low molecular weight proteins in range of MW 10.000-50.000. Even in the physiological proteinuria of < 150 mg/day, tubulo-interstitial kidney disease may exist. Using optimized sodium dodecyl sulfate polyacrylamid gel electrophores... |
The status of vitamin A, alpha-tocopherol and retinol binding protein (RBP) was investigated in 34 type 2 diabetic patients with renal impairment (mean serum creatinine 176 micromol/L), 26 type 2 diabetic patients with chronic renal failure (CRF) (mean serum creatinine 629 micromol/L) and 19 non-diabetic patients with ... |
Renal clearances of suitable clearance markers such as inulin and p-aminohippurate, determined before and after protein load, have been used for a long time to determine glomerular filtration rate (GFR), renal blood-flow, renal functional reserve as well as renal vascular resistance. Despite this long history, inconsis... |
Diabetes is the disorder most often linked with development of end-stage renal disease (ESRD) in the USA, Europe, South America, Japan, India, and Africa. Kidney disease is as likely to develop in long-duration non-insulin dependent diabetes (type 2) as in insulin-dependent diabetes mellitus (type 1). Nephropathy in di... |
The objective of this study was to evaluate the effect of the management of factors accelerating renal injury such as hypertension and diabetes on progression of chronic renal failure (CRF). For this end, the records of 112 CRF patients with serum creatinine (SCr) level of 150- 850 micromol/L were retrospectively studi... |
The superior vena cava (SVC) syndrome is due to obstruction of the SVC and may present by dyspnea, chest pain, cough, headache, dysphasia, and symptoms of increased intracranial pressure; however, the affected patients can be asymptomatic. Numerous collateral veins are often seen on the upper chest, arms and neck. The ... |
We studied a population of hemodialysis (HD) patients in the Najran region of Saudi Arabia to assess the prevalence of hepatitis C virus (HCV) and to evaluate the possible risk factors associated with this infection. The records of 90 patients undergoing dialysis in two centers of this region were reviewed. Blood sampl... |
Mycophenolate Mofetil MMF has been widely used in post-transplant immunosuppression. Its role is emerging in GN. MMF demonstrated promising results compared with cyclosphosphamide in stage IV lupus nephritis, in a recently published trial. It has been found to have a wide safety profile, with mostly gastroinetestinal s... |
In plant functional genomic studies, gene cloning into binary vectors for plant transformation is a routine procedure. Traditionally, gene cloning has relied on restriction enzyme digestion and ligation. In recent years, however, Gateway(R) cloning technology (Invitrogen Co.) has developed a fast and reliable alternati... |
The nucleus is a complex cellular organelle and accurately defining its protein content is essential before any systematic characterization can be considered. |
Alpha1-antitrypsin (D,1AT) is the most abundant circulating protease inhibitor (Pi) in human plasma. It has central function in controlling tissue degradation by inhibiting a large number of proteases including neutrophil elastase and proteinase 3 (PR3). PR3, the Wegner's autoantigen, has been suggested to be involved ... |
Patients with type I and II diabetes mellitus represent a population at high risk of the cardiovascular, cerebrovascular and renal effects of hypertension. Antihypertensive therapy should be considered for those with blood pressures above 130/85 mmHg with the aim to reduce levels below 125/75 especially for those with ... |
We evaluate in this study the factors associated with the effect of age on blood pressure in more than 4800 patients. Their physicians referred them to evaluate for secondary causes for their hypertension. Factors studied included history and physical examination, serum sodium, potassium and creatinine, a stimulated pl... |
Kuwait is a small country located on the northeastern part of the Arabian Peninsula. The most recent data on hypertension show: (a) a prevalence rate of 26.3%, (b) awareness of the disorder in only 23% of affected persons, (c) mild to moderate hypertension in 86% of subjects, (d) increased proportion of hypertensive pa... |
The inhibitor telaprevir (VX-950) of the hepatitis C virus (HCV) protease NS3-4A has been tested in a recent phase 1b clinical trial in patients infected with HCV genotype 1. This trial revealed residue mutations that confer varying degrees of drug resistance. In particular, two protease positions with the mutations V3... |
To study the expression of dentin matrix protein 1 (DMP1) and osteoclast in callus at different healing period of mandibular fracture in a adult Wistar rat model. |
The subcommissural organ (SCO) is a highly conserved brain gland present throughout the vertebrate phylum; it secretes glycoproteins into the cerebrospinal fluid (CSF), where they aggregate to form Reissner's fiber (RF). SCO-spondin is the major constituent protein of RF. Evidence exists that the SCO also secretes prot... |
Myocarditis has been shown to be a common cause of cardiomyopathy; it is believed to account for 25% of all cases of heart failure in humans. Unfortunately, the disease is difficult to detect clinically before a myopathic process ensues. Treatment of myocarditis-induced heart failure includes the standard regimen of di... |
The porphyrias are a group of uncommon metabolic diseases caused by enzyme deficiencies within heme biosynthesis that lead to neurotoxic or phototoxic heme precursor accumulation. There are four acute porphyrias characterized by neuropsychiatric symptoms: acute intermittent porphyria, variegate porphyria, hereditary co... |
To detect the expression of survivin protein, survivin mRNA, p27 protein, p27 mRNA and PTEN protein in hepatocellular carcinomas (HCC) and their clinical significances. |
To study the influence of HBV/P22 protein on the induced apoptosis of HepG2 cells. |
The hepatitis B virus core protein has been found in nuclei, cytoplasm, or both of hepatocytes transfected with HBV DNA. It is still unclear whether intact core particles could pass through nuclear pores and what could be the mechanism regulating the subcellular localization of the core protein. This study on the distr... |
To investigate the effect of hepatitis B virus X protein (HBx) on adriamycin-induced apoptosis of hepatocellular carcinoma cells. |
Autophagy is an intracellular recycling pathway that extends the life of an organism in hostile growth conditions. Yeast autophagy protein 6 (Atg6/Vps30) is required for formation of autophagosomes during starvation. Here we show that the Arabidopsis ATG6 homolog is an essential gene required for pollen germination and... |
How useful is genetics to a clinician who treats patients with Alzheimer's disease (AD)? Even though much has been learned about the genetics of AD, given the current state of knowledge, the application of genetics to clinical practice is limited. Three genes (amyloid precursor protein [APP], presenilin 1, and presenil... |
Prostate-specific antigen (PSA) screening has led to a significant rise in the number of men diagnosed with prostate cancer and an associated increase in biopsies performed. Despite its limitations, including a positive predictive value of only 25%-40%, PSA remains the only generally accepted biomarker for prostate can... |
Alcohol abuse is known to cause an array of ethanol induced abnormalities in men but very few reports are available on the effect of alcohol in women. None of them discuss the effect of ethanol consumption on erythrocyte membrane. In the present study, erythrocytes in women who consume alcohol showed significant decrea... |
The present study was examined the therapeutic effect of medium-chain triacylglycerol (MCT) in protein-energy malnutrition (PEM). Wistar rats were fed low protein diet containing 70 g/kg of long-chain triacylglycerol (LCT) or MCT for 31 days. The serum albumin concentration in rats fed MCT diet (2.88 +/- 0.04 g/dl) wer... |
To find a new preventive strategy for the infection of Schistosoma japonica, plasmid pIRES-Sj97-Sj14-Sj26 that contains fatty binding protein (Sj14), GST (Sj26) and paramyocin (Sj97) that are expressed on the membrane, was constructed. RT-PCR was used to detect the expression of Sj14 mRNA, Sj26 mRNA and Sj97 mRNA in th... |
To establish a better method of primary culture for alveolar epithelial type II cells (AEC II) and to study its bionomics, alveolar epithelial type II cells were isolated by digestion with trypsin and collagenase, which were then purified by plated into culture flask coated with rat immunoglobulin G. The purified AEC I... |
To investigate whether peroxisome proliferators-activated receptor-gamma (PPARgamma) ligand Troglitazone can reduce endothelial injury and activation during storage of harvested saphenous vein grafts. Segments of human saphenous vein graft were collected from 9 patients undergoing coronary bypass surgery and then divid... |
To explore the relation of angiotensin-converting enzyme (ACE) and angiotensin II type 1 receptor (AT1R) gene polymorphism with coronary heart disease (CHD) and the severity of coronary artery stenosis, 130 CHD patients who underwent coronary angiography were examined for the number of affected coronary vessels (> or =... |
In order to assess whether gene transfection could be mediated by ultrasound in association with P85 and find the appropriate parameters of ultrasound irradiation, the effects of ultrasound with or without P85 on gene transfection of HepG2 cells were examined. The HepG2 cells were irradiated by ultrasound at 1 MHz, 0.4... |
The reversing effect of wild-type PTEN gene on resistance of C13K cells to cisplatin and its inhibitory effect on the phosphorylation of protein kinase B (AKT) were studied. The expression of PTEN mRNA and protein in OV2008 cells and C13K cells were semi-quantitatively detected by using RT-PCR and Western blotting. Rec... |
To investigate the relationship between MDR1 and MDR3 gene and drug resistance to cisplatin of ovarian cancer cells. Two siRNAs (MDR1, MDR3) which specifically targeted MDR1 and MDR3 genes were transferred into A2780/DDP cells. Then double staining with Annexin-V-FITC/PI was used to detect cell apoptosis by the flow cy... |
To investigate the relationship between p38 mitogen-activated protein kinase (p38MAPK) and cell apoptosis during the paclitaxel resistance of ovarian carcinoma cell lines, flow cytometry (FCM) and PI staining were employed to determine the effect of p38MAPK inhibitor SB203580 on the apoptosis of A2780/Taxol cells, a dr... |
This study sought to producte alginate sodium microsphere for controlled release bovine serum albumin(BSA) and to investigate the protein release profile of the BSA-alginate sodium microsphere in vitro, which threw some light on the angiogenesis of tissue engineering bone with vascular endothelial growth factor (VEGF) ... |
We have established a human umbilical vein endothelial cell (HUVEC) line monoclonal cells with the stable expression of human tissue-type plasminogen activator (t-PA) gene to provide a basis for further study on the vascular tissue engineering. Recombinant plasmid pcDNA3. 1-Myc-His B (-)/t-PA was constructed by inserti... |
To investigate the function of testis sperm binding protein (TSBP) in sperm capacitation and acrosome reaction, the effect of the recombinant TSBP on the activity of protein kinase A was detected in the transfected cell line. With the use of prokaryotic expressing plasmid pGEX-5X-1/tsbp as template, the novel gene tsbp... |
The HBV X gene was amplified by PCR according to the pecob6 containing the whole fragment of adw subtype of HBV, then the fragment was inserted into the multiple clone site of pAdTrack-CMV. The linearized shuttle plasmid was homogenously recombined with AdEasy-1 in BJ5183 and the recombinant adenoviral plasmid pAd-X wa... |
In order to make a series of analyses on the gene expression of Eimeria tenella sensitive strain and anti-maduramycin strain at their different developmental stages, we constructed a mixed cDNA library with unsporulated oocyst, sporulated oocyst, sporozoite and merozoite from Eimeria tenella sensitive strain and antima... |
In order to further study the anti-tumor activity of bimS and the feasibility of using adenovirus vector for gene therapy,we constructed a recombinant adenovirus vector of pro-apoptotic factor bimS(pAdEasy-CMV-bimS). Human bimS gene was amplified from HL-60 leukemic cell by RT-PCR and it was identified by sequencing. T... |
Since epidemiologic studies have reported a modestly increased risk of oncogenesis associated with certain electromagnetic fields (EMF), popular media and scientists have raised concerns about possible health hazards of environmental exposure to EMF. Laboratory-based experiments have shown that a variety of biological ... |
Ultrasound has been used to accelerate the rates of numerous chemical reactions, however its effects on enzymatic reactions have been less extensively studied. While known to result in the acceleration of enzyme-catalysed reactions, ultrasonication has also been shown to induce enzyme inactivation. In this study we inv... |
The polyamines putrescine, spermidine, and spermine are organic cations that are required for cell growth and differentiation. Ornithine decarboxylase (ODC), the first and rate-limiting enzyme in the polyamine biosynthetic pathway, is a highly regulated enzyme. |
Dogs are the main source of human cystic echinococcosis. An oral vaccine would be an important contribution to control programs in endemic countries. We conducted two parallel experimental trials in Morocco and Tunisia of a new oral vaccine candidate against Echinococcus granulosus in 28 dogs. The vaccine was prepared ... |
To construct and express a fusion gene of human heptoma peptide (EPVTKAEML) with human heat shock protein 70 (HSP70). |
To construct a recombinant eukaryotic expression vector containing pcDNA3.1-mOX40-Ig fusion gene and obtain mOX40-Ig fusion protein with bioactivity by transfecting CHO cells. |
To construct the prokaryotic fusion expression vector of human beta defensin 4 (HBD4), and to express GST-HBD4 fusion protein in Escherichia coli (E.coli) and prepare polyclonal antibody of GST-HBD4. |
In this paper we develop data mining techniques to predict 3D contact potentials among protein residues (or amino acids) based on the hierarchical nucleation-propagation model of protein folding. We apply a hybrid approach, using a hidden Markov model to extract folding initiation sites, and then apply association mini... |
A key element of bioinformatics research is the extraction of meaningful information from large experimental data sets. Various approaches, including statistical and graph theoretical methods, data mining, and computational pattern recognition, have been applied to this task with varying degrees of success. Using a nov... |
Organisms express their genomes in a cell-specific manner, resulting in a variety of cellular phenotypes or phenomes. Mapping cell phenomes under a variety of experimental conditions is necessary in order to understand the responses of organisms to stimuli. Representing such data requires an integrated view of experime... |
An attempt was made to study the structural behavior of a crystal in bone composite material of rats and rabbits. A Fourier transform infrared (FTIR) spectrophotometer and computer were used to monitor the infrared spectra of five bone samples each from the rats and rabbits. The spectra indicate the absorption band in ... |
This paper presents the design, fabrication, and experimental results for a differential phase shift keying (DPSK) single SAW-based correlator on GaAs for direct sequence spread spectrum applications. The DPSK modulation format allows for noncoherent data demodulation; the SAW device correlator acts as the despreader. ... |
With resonator applications in mind, the residual stress in sputtered gold electrodes on quartz has been investigated with respect to various deposition rates (2, 10, and 50 A/s), pressures (1.0 and 3.0 10(-3) mbar), deposition temperatures (80 degrees C and room temperature (RT)), film thicknesses (approx. 400 to 800 ... |
The progressive increase in stiffening of the myocardium associated with the aging process and abetted by comorbid conditions such as diabetes may be linked to an excessive number of collagen cross links within the myocardial extra-cellular matrix. To determine whether ultrasound can delineate changes in the physical p... |
Theoretical studies on the behavior of leaky-SAW (LSAW) properties in layered structures were performed. For these calculations rotYX LiTaO (3) and rotYX LiNbO(3) LSAW crystal cuts were used, assuming different layer materials. For LSAWs both the velocity and the inherent loss due to bulk wave emission into the substra... |
We constructed an integrated immunosensor system to combine a quartz crystal microbalance with the agglutination reaction of immunized latex beads. C-reactive protein (CRP) induced an immunoreaction due to the latex bends with anti-CRP antibody. We succeeded in determining the concentration of CRP necessary in human se... |
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