New System for the Acceleration of the Airflow in Wind Turbines

Background: This patent is based on the wind industry technology called Diffuser Augmented Wind Turbines (DAWTs). This technology consists of a horizontal axis wind turbine, which is housed inside a duct with diverging section in the direction of the free air stream. In this paper, a review of preceding patents related to this technology is carried out. Objective: This paper presents an innovative patent to improve the performance of horizontal axis wind turbines. In particular, this system is aimed at improving the performance of those turbines that otherwise might not be installed due to the low wind resource existing at certain locations. Methods: The most innovative elements of this patent are: (1) the semi-spherical grooves, which are mechanized on the surface of the two diffusers in order to guarantee a more energetic boundary layer; (2) the coaxial diffuser, which is located downwind following the first diffuser in order to increase the suction effect on the air mass close to the inlet; (3) the coaxial rings located around the first diffuser outlet, which are used to deflect the external airflow toward the turbine wake; and (4), the selforientating system to orientate the system by the prevailing wind direction. Results: An application of the patent for increasing the power generated by a horizontal axis wind turbine with three blades is presented. The patent is designed and its performance is evaluated by using a Computational Fluid Dynamics code. The numerical results show that this system rises the airflow going through the rotor of the turbine. Conclusion: The patented device is an original contribution aimed at enabling a more profitable installation of wind turbines in places where the wind resource is insufficient because of the wind shear caused both by the proximity of the earth and the obstacles on the earth surface.This work was supported by the OASIS Research Project that was cofinanced by CDTI (Spanish Science and Innovation Ministry) and developed with the Spanish companies: Iridium, OHL Concesiones, Abertis, Sice, Indra, Dragados, OHL, Geocisa, GMV, Asfaltos Augusta, Hidrofersa, Eipsa, PyG, CPS, AEC and Torre de Comares Arquitectos S.L and 16 research centres. The authors also acknowledge the partial funding with FEDER funds under the Research Project FC-15-GRUPIN14-004. Finally, we also thank Swanson Analysis Inc. for the use of ANSYS University Research programs as well as the Workbench simulation environment

The genetic architecture underlying body-size traits plasticity over different temperatures and developmental stages in Caenorhabditis elegans

Most ectotherms obey the temperature-size rule, meaning they grow larger in a colder environment. This raises the question of how the interplay between genes and temperature affects the body size of ectotherms. Despite the growing body of literature on the physiological life-history and molecular genetic mechanism underlying the temperature-size rule, the overall genetic architecture orchestrating this complex phenotype is not yet fully understood. One approach to identify genetic regulators of complex phenotypes is quantitative trait locus (QTL) mapping. Here, we explore the genetic architecture of body-size phenotypes, and plasticity of body-size phenotypes at different temperatures using Caenorhabditis elegans as a model ectotherm. We used 40 recombinant inbred lines (RILs) derived from N2 and CB4856, which were reared at four different temperatures (16, 20, 24, and 26 °C) and measured at two developmental stages (L4 and adult). The animals were measured for body length, width at vulva, body volume, length/width ratio, and seven other body-size traits. The genetically diverse RILs varied in their body-size phenotypes with heritabilities ranging from 0.0 to 0.99. We detected 18 QTL underlying the body-size traits across all treatment combinations, with the majority clustering on Chromosome X. We hypothesize that the Chromosome X QTL could result from a known pleiotropic regulator—npr-1—known to affect the body size of C. elegans through behavioral changes. We also found five plasticity QTL of body-size traits where three colocalized with body-size QTL. In conclusion, our findings shed more light on multiple loci affecting body-size plasticity and the possibility of co-regulation of traits and traits plasticity by the same loci under different environments

Karakterisasi Fenotipe Dan Faktor Yang Mempengaruhi Perdagangan Kambing Jawarandu Di Pedagang Ternak Kota Samarinda Kalimantan Timur

            Pedagang ternak dalam penjualan kambing secara umum menggunakan sifat kualitatif dan kuantitatif ternak dalam menentukan harga ketika proses jual beli ternak.  Sifat tersebut mempengaruhi performans yang berkaitan dengan kemampuan produksi.  Penelitian ini bertujuan untuk mengidentifikasi fenotipe dan faktor yang mempengaruhi perdagangan kambing Jawarandu  yang dipelihara dan dipasarkan oleh pedagang ternak di Kota Samarinda, Kalimantan Timur.  Penelitian dilaksanakan pada bulan Desember 2020 -  Maret 2021 di pedagang ternak Kota Samarinda. Penelitian menggunakan kambing Jawarandu jantan  umur 8 sampai 24 bulan.  Metode penelitian dan analisis data dalam penelitian ini yaitu menggunakan metode deskriptif analisis dan analisis keragaman.  Hasil penelitian ini diperoleh rataan sifat kuantitatif kambing Jawarandu di kota Samarinda diperoleh nilai rataan dan SD dari Panjang badan, Lingkar dada dan Tinggi pundak (cm) secara berurutan yaitu  63,16±6,14; 70,87±6,48; 69,20±6,24. Keragaman sifat kualitatif kambing Jawarandu di kota Samarinda memiliki warna bulu dominan ditemukan yaitu campuran coklat putih (34,69%). Profil muka kambing yang dominan ditemukan yaitu cembung 100%, dengan bentuk telinga menjuntai ke bawah dan tidak terlipat 100%. Faktor yang berpengaruh terhadap aktivitas perdagangan kambing Jawarandu di Kota Samarinda dipengaruhi oleh jenis bangsa kambing, jenis kelamin, umur kambing, asal kambing, dan berdasarkan biaya (cost-based pricing).  Faktor dalam penetapan harga dengan berdasarkan performans akan mampu menambahkan harga jual untuk mendapatkan keuntungan ataupun pendapatan serta mampu menutupi biaya produksi dari pedagang ternak.            Pedagang ternak dalam penjualan kambing secara umum menggunakan sifat kualitatif dan kuantitatif ternak dalam menentukan harga ketika proses jual beli ternak.  Sifat tersebut mempengaruhi performans yang berkaitan dengan kemampuan produksi.  Penelitian ini bertujuan untuk mengidentifikasi fenotipe dan faktor yang mempengaruhi perdagangan kambing Jawarandu  yang dipelihara dan dipasarkan oleh pedagang ternak di Kota Samarinda, Kalimantan Timur.  Penelitian dilaksanakan pada bulan Desember 2020 -  Maret 2021 di pedagang ternak Kota Samarinda. Penelitian menggunakan kambing Jawarandu jantan  umur 8 sampai 24 bulan.  Metode penelitian dan analisis data dalam penelitian ini yaitu menggunakan metode deskriptif analisis dan analisis keragaman.  Hasil penelitian ini diperoleh rataan sifat kuantitatif kambing Jawarandu di kota Samarinda diperoleh nilai rataan dan SD dari Panjang badan, Lingkar dada dan Tinggi pundak (cm) secara berurutan yaitu  63,16±6,14; 70,87±6,48; 69,20±6,24. Keragaman sifat kualitatif kambing Jawarandu di kota Samarinda memiliki warna bulu dominan ditemukan yaitu campuran coklat putih (34,69%). Profil muka kambing yang dominan ditemukan yaitu cembung 100%, dengan bentuk telinga menjuntai ke bawah dan tidak terlipat 100%. Faktor yang berpengaruh terhadap aktivitas perdagangan kambing Jawarandu di Kota Samarinda dipengaruhi oleh jenis bangsa kambing, jenis kelamin, umur kambing, asal kambing, dan berdasarkan biaya (cost-based pricing).  Faktor dalam penetapan harga dengan berdasarkan performans akan mampu menambahkan harga jual untuk mendapatkan keuntungan ataupun pendapatan serta mampu menutupi biaya produksi dari pedagang ternak