Analysis of direct CP violation in B−→D0Ds−,D0D−B^- \to D^0 D_s^-, D^0 D^- decays

We investigate the possibility of observing the direct CP violation in the decay modes $B^- \to D^0 D_s^-$ and $D^0 D^-$ within the Standard Model. Including the contributions arising from the tree, annihilation, QCD as well as electroweak penguins with both time- and space-like components, we find that the direct CP asymmetry in $B^- \to D^0 D_s^-$ is very small $\sim 0.2$ % but in $B^- \to D^0 D^-$ decay it can be as large as 4%. Approximately $10^7$ charged $B$ mesons are required to experimentally observe the CP asymmetry parameter for the later case. Since this is easily accessible with the currently running B factories, the decay mode $B^- \to D^0 D^-$ may be pursued to look for CP violation.Comment: Latex, 14 page

Universal Scaling Property of System Approaching Equilibrium

In this Letter we show that the diffusion kinetics of kinetic energy among the atoms in non- equilibrium crystalline systems follows universal scaling relation and obey Levy-walk properties. This scaling relation is found to be valid for systems no matter how far they are driven out of equilibrium.Comment: 6 pages, 4 figure

Force induced triple point for interacting polymers

We show the existence of a force induced triple point in an interacting polymer problem that allows two zero-force thermal phase transitions. The phase diagrams for three different models of mutually attracting but self avoiding polymers are presented. One of these models has an intermediate phase and it shows a triple point but not the others. A general phase diagram with multicritical points in an extended parameter space is also discussed.Comment: 4 pages, 8 figures, revtex

Effect of quenching process on mechanical properties of flax/polypropylene composites

Flax/polypropylene needle - punched nonwovens (550 g /m2) have been produced and then used as a preform for theproduction of composites. In this study, better infiltration of polypropylene melt into the flax fibres has been achieved byaltering the crystal structure of polypropylene in the preform. A modified sequence of production of composites is alsoproposed. The proposed method yields composite with 25, 98 and, 91% improvement in tensile, flexural and short beamstrength properties as compared to the conventional method of manufacturing

Bone mineral density in patients with inherited bone marrow failure syndromes.

BackgroundPatients with inherited bone marrow failure syndromes (IBMFS) may have several risk factors for low bone mineral density (BMD). We aimed to evaluate the prevalence of low BMD in IBMFS and determine the associated risk factors.MethodsPatients with IBMFS with at least one dual-energy X-ray absorptiometry (DXA) scan were evaluated. Diagnosis of each IBMFS, Fanconi anemia (FA), dyskeratosis congenita, Diamond-Blackfan anemia, and Shwachman-Diamond syndrome was confirmed by syndrome-specific tests. Data were gathered on age, height, and clinical history. DXA scans were completed at the lumbar spine, femoral neck, and forearm. BMD was adjusted for height (HAZ) in children (age ≤20 years). Low BMD was defined as a BMD Z-score and HAZ ≤-2 in adults and children, respectively, in addition to patients currently on bisphosphonate therapy.ResultsNine of thirty-five adults (26%) and eleven of forty children (27%) had low BMD. Adults with FA had significantly lower BMD Z-scores than those with other diagnoses; however, HAZ did not vary significantly in children by diagnosis. Risk factors included hypogonadism, iron overload, and glucocorticoid use.ConclusionsAdults and children with IBMFS have high prevalence of low BMD. Prompt recognition of risk factors and management are essential to optimize bone health

Ayurvedic management of supraspinatus tendon tear: a case report

The two main causes of rotator-cuff injuries are trauma and degeneration. Modern medical sciences recommend operative reconstruction surgery for ruptured injuries of the rotator cuff. But the outcome of surgery often leads to restrictions on movement. In this case, supraspinatus tendon tears with degenerative causes were satisfactorily managed with ayurvedic conservative management alone. A 68-year-old patient was admitted to the Kayachikitsa inpatient department of Vaidyaratnam ayurveda college, Ollur, on September 21, 2023, with right shoulder pain and restricted shoulder movements. In an MRI, the case was diagnosed as a partial tear of the anterior fibres of the supraspinatus tendon of the rotator cuff with sub-coracoid bursitis of the right shoulder joint. On examination of the right shoulder joint, all shoulder movements were restricted due to pain. Hawkins’s impingement test, Neer’s test, and the painful arc test were found to be positive. She underwent a treatment protocol of Vatavyadhi Chikitsa incorporated with Bhagna Chikitsa. Internal and external medications, along with Upanaham, Abhyanga, Thaila pichu, bandage, and active shoulder exercises, were the treatments followed in this case. After the treatment, patient got relief from pain (VAS scale: 7 to 4) and considerable improvement in range of motion (ROM) for the right shoulder joint. This case study highlighted that within one month, the chronic rotator cuff injury got partial functional restoration (SPADI-56 to 30) by conservative ayurvedic management