Q^2 dependence of diffractive vector meson electroproduction

We give a general formula for the cross section for diffractive vector meson electroproduction, gamma^* p -> Vp. We first calculate diffractive qqbar production, and then use parton-hadron duality by projecting out the J^P = 1^- state in the appropriate mass interval. We compare the Q^2 dependence of the cross section for the diffractive production of rho and J/psi mesons with recent HERA data. We include the characteristic Q^2 dependence associated with the use of the skewed gluon distribution. We give predictions for sigma_L/sigma_T for both rho and J/psi production.Comment: 15 pages, LaTeX, including five PostScript figure

Hubungan Asupan Makan Dan Status Merokok Dengan Status Gizi Pada Pasien Penyakit Paru Obstruksi Kronik (Ppok) Rawat Jalan Di Rumah Sakit Paru dr. Ario Wirawan Salatiga

Introduction: Nutrition status on a patient with COPD is an important factor affecting the development of the disease. Poor nutrition status or malnutrition on COPD is caused by decreasing of dietary intake, the increasing energy expenditure, and humoral factors.There are several factors affecting appetite and one of which is smoking status. In Central Java, RSPAW Salatiga is a center of lung and respiratory health care where COPD becomes the first out of ten major deseases of out patient care in RSPAW Salatiga in the last five years. 80% of patients with COPD undergoing out-patient care in RSPAW are in a category of low fat-free mass index. The intake rate of energy, carbohidrat, protein, and fat on patients with COPD undergoing out-patient care in RSPAW categorized low which was 80%, 53% are former smokers and 29% are heavy smokers. Purpose: The purpose of this research was to determine the relationship between dietary intake and smoking status with nutritional status on patients with COPD undergoing out-patient care at RSPAW Salatiga. Method: This was a cross sectional study with consecutive sampling. The subjects of this research were 30 patients with COPD undergoing out-patient care in RSPAW Salatiga who met the criteria of inclusive and exclusive. Dietary intake was obtained by interview and food frequency semi quantitative and smoking status were obtained from quesionaire interview and nutritional status were measured using fat free mass index by using Bioelectrical Impedance Analysis and Microtoice. Data were analyzed using Pearson Product Moment Correlation. Results: 73,4% of the subjects were indicated former-smoker. 53,5% of the subjects were in moderate stage of COPD. 100% of the subjects were in category of low energy intake, 90% of the subjects were in category of low carbohidrate intake, 100% of the subject are in category of low protein intake, 90% of the subjects were in category of low fat intake. 36,7% of the subjects were in category of heavy smoker. 86,7% of the subject are in category of low nutritional status. Conclusion: There was relationship between energy intake and nutritional status (p=0,002, r=-0,532), carbohydrate intake and nutritional status (p=0,005, r=-0,502) and fat intake and nutritional status (p=0,034, r=-0,388). There was no correlation between protein intake and smoking status with nutritional status

Cephalometric studies of the mandible, its masticatory muscles and vasculature of growing Göttingen Minipigs — A comparative anatomical study to refine experimental mandibular surgery

Over many decades, the Göttingen Minipig has been used as a large animal model in experimental surgical research of the mandible. Recently several authors have raised concerns over the use of the Göttingen Minipig in this research area, observing problems with post-operative wound healing and loosening implants. To reduce these complications during and after surgery and to improve animal welfare in mandibular surgery research, the present study elucidated how comparable the mandible of minipigs is to that of humans and whether these complications could be caused by specific anatomical characteristics of the minipigs’ mandible, its masticatory muscles and associated vasculature. Twenty-two mandibular cephalometric parameters were measured on CT scans of Göttingen Minipigs aged between 12 and 21 months. Ultimately, we compared this data with human data reported in the scientific literature. In addition, image segmentation was used to determine the masticatory muscle morphology and the configuration of the mandibular blood vessels. Compared to data of humans, significant differences in the mandibular anatomy of minipigs were found. Of the 22 parameters measured only four were found to be highly comparable, whilst the others were not. The 3D examinations of the minipigs vasculature showed a very prominent deep facial vein directly medial to the mandibular ramus and potentially interfering with the sectional plane of mandibular distraction osteogenesis. Damage to this vessel could result in inaccessible bleeding. The findings of this study suggest that Göttingen Minipigs are not ideal animal models for experimental mandibular surgery research. Nevertheless if these minipigs are used the authors recommend that radiographic techniques, such as computed tomography, be used in the specific planning procedures for the mandibular surgical experiments. In addition, it is advisable to choose suitable age groups and customize implants based on the mandibular dimensions reported in this study

High-resolution mucociliary transport measurement in live excised large animal trachea using synchrotron X-ray imaging

Background: The Australian Synchrotron Imaging and Medical Beamline (IMBL) was designed as the world's widest synchrotron X-ray beam, enabling both clinical imaging and therapeutic applications for humans as well as the imaging of large animal models. Our group is developing methods for imaging the airways of newly developed CF animal models that display human-like lung disease, such as the CF pig, and we expect that the IMBL can be utilised to image airways in animals of this size. Methods: This study utilised samples of excised tracheal tissue to assess the feasibility, logistics and protocols required for airway imaging in large animal models such as pigs and sheep at the IMBL. We designed an image processing algorithm to automatically track and quantify the tracheal mucociliary transport (MCT) behaviour of 103 μm diameter high refractive index (HRI) glass bead marker particles deposited onto the surface of freshly-excised normal sheep and pig tracheae, and assessed the effects of airway rehydrating aerosols. Results: We successfully accessed and used scavenged tracheal tissue, identified the minimum bead size that is visible using our chosen imaging setup, verified that MCT could be visualised, and that our automated tracking algorithm could quantify particle motion. The imaging sequences show particles propelled by cilia, against gravity, up the airway surface, within a well-defined range of clearance speeds and with examples of 'clumping' behaviour that is consistent with the in vivo capture and mucus-driven transport of particles. Conclusion: This study demonstrated that the wide beam at the IMBL is suitable for imaging MCT in ex vivo tissue samples. We are now transitioning to in vivo imaging of MCT in live pigs, utilising higher X-ray energies and shorter exposures to minimise motion blur.Martin Donnelley, Kaye S. Morgan, Maged Awadalla, Nigel R. Farrow, Chris Hall and David W. Parson

The analytical determination of thorium with O-benzoyl bensoic acid.

Thesis (M.A.)--Boston University N.B.:Pages missing : 6. Only one copy was available