1,035 research outputs found
The Anharmonic Correction in the Soliton Model for the Hyperons
We derive the anharmonic correction to the hyperon energy in the bound state
version of the topological soliton model for the hyperons, and show that it
represents a negative correction of at most 10% to the energy of the bound
heavy flavour two-meson system in the case of cascade hyperons. The main
anharmonic correction arises from the mass term in the Lagrangian density. For
large meson masses the consistency of the model requires that the anharmonic
correction decreases as the inverse square root of the mass of the heavy
flavour meson.Comment: 19 page
A monitored beam for precise neutrino flux determination: The ENUBET project
In this paper we discuss the ENUBET experiment and explain
how it can reduce by nearly one order of magnitude the flux-related systematics in accelerator neutrino beams. The ongoing research and development activities are described, together with the latest testbeam results from detector prototypes
Struktur Dan Komponen Arang Serta Arang Aktif Tempurung Kemiri
Cara aktivasi arang menentukan kekhususan penggunaan arang aktif yang dihasilkan. Secara umum dikenal dua cara aktivasi arang untuk menghasilkan arang aktif yaitu cara fisika dan kimia. Penelitian ini bertujuan untuk mengetahui struktur dan komponen penyusun arang dan arang aktif tempurung kemiri. Tempurung kemiri dikarbonisasi menggunakan tungku drum untuk menghasilkan arang, selanjutnya arang diaktivasi di dalam retort listrik menggunakan aktivator panas selama 120 menit pada suhu 550C, 650C, dan 750C dan aktivator uap air selama 90 dan 120 menit pada suhu 750C. Sampel uji tempurung kemiri, arang dan arang aktif dikarakterisasi strukturnya yang meliputi gugus fungsi, kristalinitas dan porositas dengan menggunakan Fourier Transform Infra Red (FTIR), X-Ray Difractometer (XRD) dan Scanning Electron Microscope (SEM). Selain itu, senyawa kimia masing-masing sampel uji diidentifikasi menggunakan Pyrolisis Gas Chromatograph Mass Spectrometer (Py-GCMS) Hasil mengindikasikan bahwa proses aktivasi menyebabkan terjadinya Perubahan pola gugus fungsi, peningkatan kristalinitas, pembukaan pori dan reduksi senyawa kimia. Semakin tinggi suhu aktivasi diikuti oleh peningkatan kristalinitas, diameter pori dan reduksi senyawa kimia arang aktif. Aktivasi menggunakan uap air menghasilkan arang aktif dengan pori yang relatif lebih bersih
Integration of SRF and carbonization plant for small forestry farms
A continuous oxidative carbonization pilot unit, with a capacity of 50 kg/h,has been developed and builtby RE-CORD; reported performance data shows that the unit can produce high quality charcoal, suitable for BBQ, metallurgy of activated-carbon manufacturing, as well as biochar. Charcoal yield in excess of 24 wt% (dry) has been achieved, with a fixed carbon content higher than 85 wt% (dry). In this work,the up-scaled 250 kg/h demo plant has been designed, and the construction, operation and maintenancecosts estimated. It was assumed to feed the plant with a dedicated SRF of either poplar or robinia, which represents a very innovative and yet unexplored value chain. Performance data are reported along with economic evaluation of the whole chain. Results shows how aland management scheme based on SRF coupled to innovative small-scale biomass carbonization technology represents an appealing opportunity for business diversification in small and medium forestry enterprises
Transoral endoscopic thyroidectomy: A case report
AbstractIntroductionEndoscopic thyroidectomy, initially an experimental procedure, is now being performed in increasing frequency. It aims to provide patients undergoing thyroidectomy with a ‘scar-free’ surgery. Transoral endoscopic thyroidectomy is one such novel procedure that is based on the principles of natural orifice translumenal surgery (NOTES) and allows for a truly scar-free surgery with minimal dissection.Presentation of caseA 21-year-old female presented with a swelling over the left side of her neck. Ultrasound revealed a solitary nodule and FNAC showed features suggestive of a follicular adenoma.DiscussionThe patient underwent transoral endoscopic hemi-thyroidectomy. The procedure lasted for 2h and is one of the few documented cases of transoral endoscopic thyroidectomy performed on live patients.ConclusionTransoral endoscopic thyroidectomy is proving to be a feasible technique with little or no complications as compared to other endoscopic thyroid surgeries. It provides surgeons with easy access to the thyroid gland and patients with aesthetically pleasing results
Antihyperlipidemic and antiperoxidative effect of Diasulin, a polyherbal formulation in alloxan induced hyperglycemic rats
BACKGROUND: This study was undertaken to investigation the effect of Diasulin, a poly herbal drug composed of ethanolic extract of ten medicinal plants on blood glucose, plasma insulin, tissue lipid profile, and lipidperoxidation in alloxan induced diabetes. METHODS: Ethanolic extract of Diasulin a, poly herbal drug was administered orally (200 mg/kg body weight) for 30 days. The different doses of Diasulin on blood glucose and plasma insulin in diabetic rats were studied and the levels of lipid peroxides [TBARS, and Hydroperoxide] and tissue lipids [cholesterol, triglyceride, phospholipides and free fatty acids] were also estimated in alloxan induced diabetic rats. The effects were compared with glibenclamide. RESULT: Treatment with Diasulin and glibenclamide resulted in a significant reduction of blood glucose and increase in plasma insulin. Diasulin also resulted in a significant decrease in tissue lipids and lipid peroxide formation. The effect produced by Diasulin was comparable with that of glibenclamide. CONCLUSION: The decreased lipid peroxides and tissue lipids clearly showed the antihyperlipidemic and antiperoxidative effect of Diasulin apart from its antidiabetic effect
Effect of Gymnema montanum Leaves on Serum and Tissue Lipids in Alloxan Diabetic Rats
The effect of Gymnema montanum leaves on alloxaninduced
hyperlipidemia was studied in male Wistar rats.
Ethanolic extract of G. montanum leaves was administered
orally and different doses of the extract on blood glucose,
serum and tissue lipids, hexokinase, glucose-6-phosphatase,
thiobarbituric acid–reactive substances (TBARS), hydroperoxides,
and glutathione in alloxan-induced diabetic
rats were studied. G. montanum leaf extract (GLEt) at doses
of 50, 100, 200 mg/kg body weight for 3 weeks suppressed
the elevated blood glucose and lipid levels in diabetic rats.
GLEt at 200 mg/kg body weight was found to be comparable
to glibenclamide, a reference drug. These data indicate
that G. montanum represents an effective antihyperglycemic
and antihyperlipidemic adjunct for the treatment
of diabetes and a potential source of discovery of new orally
active agent for future therapy
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