Formation of Metal Complexes with the Arsenazo I and Arsenazo III Reagents as Functions of the Medium Acidity

A function is given for the medium acidity in which metals react with arsenazo I and arsenazo III, as dependent upon the solubility product of the metal hydroxides

Webs of Lagrangian Tori in Projective Symplectic Manifolds

For a Lagrangian torus A in a simply-connected projective symplectic manifold M, we prove that M has a hypersurface disjoint from a deformation of A. This implies that a Lagrangian torus in a compact hyperk\"ahler manifold is a fiber of an almost holomorphic Lagrangian fibration, giving an affirmative answer to a question of Beauville's. Our proof employs two different tools: the theory of action-angle variables for algebraically completely integrable Hamiltonian systems and Wielandt's theory of subnormal subgroups.Comment: 18 pages, minor latex problem fixe

HUBUNGAN KARAKTERISTIK DENGAN ASPIRASI BEKERJA DALAM BIDANG AGROINDUSTRI PERIKANAN PADA PEMUDA PEDESAAN DI DESA PUGER WETAN KECAMATAN PUGER KABUPATEN JEMBER

Penelitian ini bertujuan untuk menjelaskan seberapa kuat hubungan antara karakteristik individu dan karakteristik lingkungan dengan aspirasi pada pemuda yang bekerja di agroindustri perikanan di Desa Puger Wetan, Kecamatan Puger, Kabupaten Jember. Pada penelitian ini, rancangan penelitian yang digunakan adalah jenis penelitian survai (survey research), dalam penelitian ini sebagai unit analisisnya adalah pemuda di desa puger wetan yang berjumlah 34 pemuda. Informasi atau data tentang karakteristik individu, karakteristik lingkungan dan aspirasi diperoleh berdasarkan pandangan, tanggapan, dan persepsi dari pemuda. Penelitian ini menggunakan metode sampel yang representatif, cara pengambilan sampel menggunakan proporsional random dengan cara diundi, dimana pada daerah penelitian terdapat empat agroidustri perikanan dengan jumlah pemuda yang berbeda-beda. Metode analisis yang digunakan adalah analisis korelasi.Variabel bebas dalam penelitian ini adalah Karakteristik individu dan Karakteristik lingkungan. Sedangkan variabel terikatnya adalah Aspirasi.Berdasarkan pengujian koefisien korelasi Asosiasi Eta Terdapat hubungan yang nyata positif antara status jenis kelamin dengan aspirasi, pengujian koefisien korelasi Asosiasi Eta Terdapat hubungan yang nyata positif antara status perkawinan dengan aspirasi. Berdasarkan hasil analisis koefisien korelasi Spearman’s rho Tidak terdapat hubungan yang nyata antara usia dengan aspirasi dan Tidak terdapat hubungan yang nyata antara tingkat pendidikan dengan aspirasi. Sedangkan berdasarkan analisis korelasi Pearson Product Moment Terdapat hubungan yang nyata positif antara karakteristik lingkungan dengan aspirasi

Microporation is a valuable transfection method for efficient gene delivery into human umbilical cord blood-derived mesenchymal stem cells

<p>Abstract</p> <p>Background</p> <p>Mesenchymal stem cells (MSCs) are an attractive source of adult stem cells for therapeutic application in clinical study. Genetic modification of MSCs with beneficial genes makes them more effective for therapeutic use. However, it is difficult to transduce genes into MSCs by common transfection methods, especially nonviral methods. In this study, we applied microporation technology as a novel electroporation technique to introduce enhanced green fluorescent protein (EGFP) and brain-derived neurotropfic factor (BDNF) plasmid DNA into human umbilical cord blood-derived MSCs (hUCB-MSCs) with significant efficiency, and investigated the stem cell potentiality of engineered MSCs through their phenotypes, proliferative capacity, ability to differentiate into multiple lineages, and migration ability towards malignant glioma cells.</p> <p>Results</p> <p>Using microporation with EGFP as a reporter gene, hUCB-MSCs were transfected with higher efficiency (83%) and only minimal cell damage than when conventional liposome-based reagent (<20%) or established electroporation methods were used (30-40%). More importantly, microporation did not affect the immunophenotype of hUCB-MSCs, their proliferation activity, ability to differentiate into mesodermal and ectodermal lineages, or migration ability towards cancer cells. In addition, the BDNF gene could be successfully transfected into hUCB-MSCs, and BDNF expression remained fairly constant for the first 2 weeks <it>in vitro </it>and <it>in vivo</it>. Moreover, microporation of BDNF gene into hUCB-MSCs promoted their <it>in vitro </it>differentiation into neural cells.</p> <p>Conclusion</p> <p>Taken together, the present data demonstrates the value of microporation as an efficient means of transfection of MSCs without changing their multiple properties. Gene delivery by microporation may enhance the feasibility of transgenic stem cell therapy.</p

Effect of primary and secondary alcohols as oxygenated additives on the performance and emission characteristics of diesel engine

The demand for renewable energy sources is gradually escalating due to the spontaneously growing population and global economic development. The access to fossil fuels is gradually declining due to the limited available reserves. Hence, renewable energy resources, technology choice, and energy policy are always being revised due to the modernization of society. Meanwhile, the liquid energy sources such as methyl ester from locally produced vegetable oils are readily accepted by many countries globally, although it is currently being blended (up to 20%) with diesel. Oxides of nitrogen are the most substantial emissions from diesel engines produced due to high combustion temperature. The addition of alcohol in the fuel reduces the NOx formation since alcohols have high latent heat of evaporation. The present study's primary purpose is to investigate the effect of different alcohol types on engine performance and emission characteristics. For this purpose, seven test fuels and neat diesel were used. The test fuels P20 (20% palm biodiesel with 70% neat diesel and 10% alcohol on a volume basis), D70P20E10, D70P20Pr10, D70P20B10, D70P20Pe10, D70P20H10 were prepared and tested on a single-cylinder, 4-stroke, DI-diesel engine at different speeds at 100 % load. The P20E10 ternary fuel blend illustrated the most practical combination of all the bioethanol-based blends, which considerably improves the BTE, BSFC and reduces NOxformation at high speed compared to other types of alcoholic fuel blends. Also, the P20E10 fuel blend improved the cloud point of neat diesel

Embedded Vision Systems: A Review of the Literature

Over the past two decades, the use of low power Field Programmable Gate Arrays (FPGA) for the acceleration of various vision systems mainly on embedded devices have become widespread. The reconfigurable and parallel nature of the FPGA opens up new opportunities to speed-up computationally intensive vision and neural algorithms on embedded and portable devices. This paper presents a comprehensive review of embedded vision algorithms and applications over the past decade. The review will discuss vision based systems and approaches, and how they have been implemented on embedded devices. Topics covered include image acquisition, preprocessing, object detection and tracking, recognition as well as high-level classification. This is followed by an outline of the advantages and disadvantages of the various embedded implementations. Finally, an overview of the challenges in the field and future research trends are presented. This review is expected to serve as a tutorial and reference source for embedded computer vision systems

Effect of alcoholic and nano-particles additives on tribological properties of diesel–palm–sesame–biodiesel blends

This study focused on evaluating the lubricity of diesel–biodiesel fuel with oxygenated alcoholic and nano-particle additives. Fuel injection system lubrication depended primarily on the fuel used in the diesel engine. Palm–sesame oil blend was used to produce biodiesel using the ultrasound-assisted technique. B30 fuel sample as a base fuel was blended with fuel additives in different proportions prior to tribological behavior analysis. The lubricity of fuel samples measured using HFRR in accordance with the standard method ASTM D6079. All tested fuels’ Tribological behavior examined through worn steel balls and plates using scanning electron microscopy (SEM) to assess wear scar diameter and surface morphology. During the test run, the friction coefficient was measured directly by the HFRR tribometer system. The results exhibited that B10 (diesel) had a very poor coefficient of friction and wear scar diameter, among other tested fuels. The addition of oxygenated alcohol (ethanol) as a fuel additive in the B30 fuel sample decreased the lubricity of fuel and increased the wear and friction coefficient, among other fuel additives. B30 with DMC showed the least wear scar diameter among all tested fuels. B30 with nanoparticle TiO2 exhibited the best results with the least wear scar diameter and lowest friction coefficient among all other fuel samples. B30+DMC demonstrated significant improvement in engine performance (BTE) and carbon emissions compared to different tested samples. B30+TiO2 also showed considerable improvement in engine characteristics

Cardiopoietic cell therapy for advanced ischemic heart failure: results at 39 weeks of the prospective, randomized, double blind, sham-controlled CHART-1 clinical trial

Cardiopoietic cells, produced through cardiogenic conditioning of patients' mesenchymal stem cells, have shown preliminary efficacy. The Congestive Heart Failure Cardiopoietic Regenerative Therapy (CHART-1) trial aimed to validate cardiopoiesis-based biotherapy in a larger heart failure cohort

Modelling of Support Systems for Offshore Wind Farms

With projected expansion of the offshore renewable energy sector, in terms of capacity (individual machine ratings and overall array size), depth and distance from shore, the development of effective support strategies that are appropriate to the array under consideration becomes more difficult. Recent research at UCL led to the production of a tool for modelling different Operation and Maintenance strategies for offshore windfarms. Developed in a 6 month MSc project, the Matlab model incorporated a range of input parameters such as array location, configuration and equipment reliability and developed a maintenance strategy utilising a choice of vessels. The model was validated by comparison with available data, with good correlation. Ongoing work is examining the use of the UCL developed Design Building Block approach to design Wind Farm Support Vessels, and to integrate the ship design models with the O&M model to allow an integrated analysis approach