Pengaruh Perbedaan Konsentrasi Pupuk Organik Cair terhadap Biomassa dan Populasi Cacing Sutera (Tubifex SP.)

The research aims to know the influence of different liquid organic fertilizer concentrations on the population and biomass of silk worms (Tubifex sp.). Research was conducted in the field laboratory of BDP – Panteriek, Lueng Bata District, Banda Aceh in February 2016. This research used the experimental method with Completely Randomized Design. The different concentrations were : 0, 5, 10, 15 ml, for 30 days. The results showed that the biomass ranged from 2,70 ± 0,16 to 16,27 ± 0,83 g, the silk worms population ranged from 6.784 ± 83 to 14.029 ± 445 ind. The highest values for all parameters were obtained at treatment D which was 15 ml. The ANOVA showed that the adding of organic liquid fertilizers has significant effect againt the biomass and population of silk worms (Tubifex sp.). Duncan's test showed that the value of the biomass and population of silk worms (Tubifex sp.) on treatment D (15 ml) showed significant different to other treatments. Based on the results of the study it can be concluded that the addition of liquid organic fertilizers increase the production of biomass and population of the silk worms (Tubifex sp.)

Variasi Periode Penyinaran (Fotoperiod) terhadap Pertumbuhan dan Kelangsungan Hidup Larva Ikan Peres (Osteochilus Kappeni)

This research aimed to determine the effect of photoperiod on the growth and survival rate of peresfish larvae (Osteochilus kappeni). The research was conducted at technical implementation unit of fish breeding center Lukup Badak, Pegasing district, Aceh Tengah on August until September 2016. The method used was Completely Randomized Design (CRD) consisted of five treatments and three replications. The treatments were A (control), B (15 L : 9 D), C (18 L : 6 D), D (21 L : 3 D), and E (24 L : 0 D) using Light Emitting Diode (LED) lamp. The result of ANOVA test showed that the variation of photoperiod gave significant effect on the length growth,weight growth, specific growth rate, long diversity coefficient, and survival rate of peres fish larvae. The Duncan test showed that the best treatment was found at treatment D (21 L : 3 D) with a mean value of length growth was 1,4 cm, weight growth was 0,07 g, specific growth rate was 0,30%/hari, long diversity coefficient was 1,83%, and survival rate was 89,33%.Penelitian ini bertujuan untuk mengetahui pengaruh fotoperiod terhadap pertumbuhan dan kelangsungan hidup larva ikan peres (Osteochilus kappeni).Penelitian bertempat di Unit Pelaksanaan Teknis Balai Benih Ikan Lukup Badak Kecamatan Pegasing Kabupaten Aceh Tengah pada bulan Agustus sampai September 2016.Metode penelitian yang digunakan adalah metode eksperimental dengan Rancangan Acak Lengkap (RAL), terdiri dari lima perlakuan dan tiga kali ulangan. Perlakuan yang diberikan adalah A (tanpa perlakuan), B (15 T : 9 G), C (18 T : 6 G), D (21 T : 3 G), dan E (24 T : 0 G) dengan menggunakan lampu Light Emitting Diode (LED). Hasil uji ANOVA menunjukkan bahwa variasi periode penyinaran pada larva ikan peres berpengaruh nyata terhadap pertumbuhan panjang mutlak, berat mutlak, laju pertumbuhan spesifik, koefisien keragaman panjang, dan kelangsungan hidup. Hasil uji Duncan menunjukkan bahwa perlakuan terbaik ditemukan pada perlakuan D (21 T : 3 G) dengan nilai rata-rata pertumbuhan panjang 1,4 cm, pertumbuhan berat 0,07 gram, laju pertumbuhan spesifik 0,30%/hari, koefisien keragaman panjang 1,83%, dan kelangsungan hidup 89,33%

Pemanfaatan Limbah Budidaya Ikan Lele (Clarias Gariepinus) sebagai Pakan Alami Ikan Peres (Osteochillus SP.) pada Sistem Resirkulasi

The objective of this research was to analyze the utilization of waste catfish farming as a commodity by utilizing phytoplankton growing up from the utilization of waste catfish  farming on cultivating a different stocking. This research was implemented on Fish Seed Hall (BBI) Lukup Rhino Subdistrict of Central Aceh district Pegasing in October – November 2015. This research used the completely randomized design which consists of 4 treatments and 3 replicates. Treatment is provided in the form of A fish Density: 1 head/1 liter of wastewater recirculation system cultivating catfish, fish Density B : 1 head/1.5 liter of wastewater recirculation system of cultivating catfish, fish Density C : 1 head/2 liters of wastewater recirculation aquaculture system of catfish, fish Density D : 1 head/2.5 liters of wastewater recirculation system of cultivating catfish stocked up on fruit with as many as 12 aquarium water volume 30 litres. Based on the results of research on the growth of weight gain the best results on the treatment of D with a value of 0.38 g and the lowest found in treatment A with a value of 0.28 gr, survival with the best results on the treatment A with 91.11% and the lowest refractory treatment C by the value 84.44%, the length of the intestine relatively with the best results at the treatment  A with 323% results and the lowest refractory treatment  C by the value of the 276%, the abundance of phytoplankton obtain Aphanocapsa sp. as phytoplankton most and least Oscillatoria sp, while the biggest part of the index getting most phytoplankton Aphanocapsa sp and the least Asterococcus sp. Penelitian ini bertujuan untuk menganalisis pemanfaatan limbah ikan lele sebagai komoditas tambahan dengan memanfaatkan fitoplankton yang tumbuh dari pemanfaatan limbah budidaya lele pada padat tebar yang berbeda. Penelitian ini dilaksanakan di Balai Benih Ikan (BBI) Lukup Badak Kecamatan Pegasing Kabupaten Aceh Tengah pada bulan Oktober – November 2015. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), yang terdiri dari 4 perlakuan dan 3 kali ulangan. Perlakuan yang diberikan adalah berupa A : Kepadatan ikan 1 ekor/ 1 liter pada sistem resirkulasi air limbah budidaya lele, B : Kepadatan ikan 1 ekor/ 1,5 liter pada sistem resirkulasi air limbah budidaya lele, C : Kepadatan ikan 1 ekor/ 2 liter pada sistem resirkulasi air limbah budidaya lele, D : Kepadatan ikan 1 ekor/ 2,5 liter pada sistem resirkulasi air limbah budidaya lele yang ditebar pada akuarium sebanyak 12 buah dengan volume air 30 liter. Berdasarkan hasil penelitian pada pertumbuhan bobot mendapatkan hasil yang terbaik pada­ perlakuan D dengan nilai 0,38 gr dan yang terendah terdapat pada perlakuan A dengan nilai 0,28 gr, kelangsungan hidup dengan hasil terbaik pada perlakuan A 91,11 % dan yang terendah terdapat pada perlakuan C dengan nilai 84,44 %, panjang usus relatif dengan hasil terbaik pada perlakuan A dengan hasil 323 % dan yang terendah terdapat pada perlakuan C dengan nilai 276 %, kelimpahan fitoplankton mendapatkan Aphanocapsa sp sebagai fitoplankton terbanyak dan yang paling sedikit Oscillatoria sp, sedangkan indeks bagian terbesar mendapatkan fitoplankton terbanyak Aphanocapsa sp dan yang paling sedikit Asterococcus sp

The Effects Of Red Yam Flour (Ipomoea Batatas L.) On The Growth, Survival Rate And Skin Color Of Goldfish (Carrasius Auratus)

This study evaluated the effects of commercial diets supplementedwith 0%, 3%, 6%, 9%and 12% red yam flour (Ipomoea batatas L.) on the growth, survival rate and skin colour of goldfish (Carrasius auratus). A completely randomized experimental design was developed with five treatments and three replicates. Seventy-five goldfish with the average initial length of 4.4 cm were assigned to fifteen experimental tanks. The experiment had lasted for twenty-eight days. The results showed that the growth and survival rate were not significantly affected by dietary treatments (P > 0.05). However, red yam flour significantly affected the skin color of goldfish with the best concentration of 9%.It was concluded that the dietary administration of red yam flour of 9% was found to be a suitable dietary supplementation to ensure skin pigmentation as well as there were not bad effects on fish growth and survival rate

Inhibition Evaluation of 5-(4-(1H-pyrrol-1-yl)phenyl)-2-mercapto-1,3,4-oxadiazole for the Corrosion of Mild Steel in an Acidic Environment: Thermodynamic and DFT Aspects

In this investigation, an oxadiazole namely 5-(4-(1H-pyrrol-1-yl)phenyl)-2-mercapto-1,3,4-oxadiazole (PMO), was synthesized and explored as an inhibitor against the corrosion  of mild steel in 1.0 M hydrochloric acid environment at various solution temperature 303-333 K. gravimetric, and microscopic techniques, namely, weight loss (WL), and scanning electron microscopy (SEM), have been used to evaluate the inhibitive performance of the tested PMO. The results of the WL method displayed that the inhibition efficiency (%IE) was found to increase with the inhibitor concentration, while it reduced with increasing temperature. Furthermore, the WL results reveal that PMO inhibits corrosion display an IE of 95% at the highest concentration of 0.005 M. The SEM images of the mild steel surface coupon after adding PMO revealed a wide coverage of PMO molecules on the mild steel surface. Hence, the high inhibiting efficiency acquired by the tested inhibitor was explained by the strong adsorption of PMO molecules on the surface of mild steel. A protective layer has been constructed and it separating the mild steel surface from the hydrochloric acid solution, and such adsorption was found to obey Langmuir adsorption isotherm. Moreover, the thermodynamic parameters suggested that the adsorption nature of PMO molecules on the coupon surface was chemo-physisorption. Quantum chemical calculations were conducted by density functional theory (DFT) which help correlate the methodological findings with the theoretical investigations. The mechanisms of PMO molecules as corrosion inhibitor for mild steel surface in the corrosive environment was also discussed

Effect of feed rate on laser surface cladding of cold rolled carbon steel

Oil and gas industries require much equipment and tools having extra ordinary hardness, strength, wear and chemical properties. They have been established well that the important manufacturing processes to achieve these properties are laser cladding of special alloys on cheap substrates such as carbon steels. In order to achieve the optimum properties for these industries, controllable dilution between substrate and clad coating should obtained. In this study, the performance of laser cladding is found to be controlled by two important outputs geometry dimensions and microstructure. The geometry dimensions include many features of clad width, clad height, cont act angle, depth of penetration and dilution area. In order to determine the quality of clad coatings, these features were correlated with laser processing parameters such as specific energy. An experimental study has been concentrated on determine the all dimensions and dilution area on cladding Ni- 5 wt% Al mixed powder on a cold rolled low carbon steel. Wide ranges of traverse speeds in the range of 1.5 to 12.5 mm/s were used to produce clad coatings with different dilutions from the substrate. The laser power, laser beam diameter and powder feed rate employed were 1.8 kW, 2.5 mm and 10 g/min respectively; the specific energies used were 58 to 480 J/mm2. Many single or combined features were developed and their values were determined for cladding tracks having different dilutions. It was postulated that the successful cladding process could be described by new developing terms such as effective clad thickness, effective clad dimensions, dilution aspect ratio and effective specific energy. The data obtained could be used effectively to distinguish between cladding and highly alloyed tracks as a function of specific energy and geometry dimensions of the deposit coatings

Nasopharyngeal oxygen insufflation following pre-oxygenation using the four deep breath technique

Summary This paper evaluates the effectiveness of nasopharyngeal oxygen insufflation following preoxygenation using the four deep breath technique within 30 s, on the onset of haemoglobin desaturation during the subsequent apnoea. Thirty ASA I or II patients were randomly allocated to one of two groups. In the study group (n = 15), pre-oxygenation was followed by insufflation of oxygen at a flow of 5 l.min )1 via a nasopharyngeal catheter commenced at the onset of apnoea. In the control group, pre-oxygenation was not followed by nasopharyngeal oxygen insufflation (n = 15). In the control group, S p O 2 fell to 95% within a mean (SD) apnoea time of 3.65 (1.15) min, whereas in the study group, S p O 2 was maintained in all patients at 100% throughout the 6 min of apnoea, at which point apnoea was terminated and positive pressure ventilation commenced. We conclude that nasopharyngeal oxygen insufflation following pre-oxygenation using the four deep breath technique can delay the onset of haemoglobin desaturation for a significant period of time during the subsequent apnoea. Increasing ambient O 2 fraction from 0.9 to 1.0 more than doubled the time before haemoglobin desaturation fell to 50% and extended the period of apnoea to a greater extent than when the ambient O 2 fraction was increased from 0.21 to 0.9. During brainstem death testing, only one study has compared the effects of 100% oxygen and air as alternative ambient gases on P a O 2 ; patients who had been pre-oxygenated with 100% O 2 developed little or no hypoxaemia when compared to those receiving ai

Automatic transmission: ethnicity, racialization and the car

YesThis article is based on ethnographic research carried out in Bradford, an ethnically diverse city situated in the north of England. The sample of over 60 participants mostly comprises males of British Pakistani Muslim heritage but varies in terms other markers of identity such as social class, profession and residential/working locale. The article analyses the cultural value and meaning of cars within a multicultural context and how a consumer object can feed into the processes which refine and embed racialized identities. Small cases studies reveal the concrete and discursive ways through which ideas around identity and ethnicity are transmitted and how, in particular, racialization continues to feature as a live, active and recognisable process in everyday experience

SOX9 predicts progression towards cirrhosis in patients while its loss protects against liver fibrosis

Fibrosis and organ failure is a common endpoint for many chronic liver diseases. Much is known about the upstream inflammatory mechanisms provoking fibrosis and downstream potential for tissue remodeling. However, less is known about the transcriptional regulation in vivo governing fibrotic matrix deposition by liver myofibroblasts. This gap in understanding has hampered molecular predictions of disease severity and clinical progression and restricted targets for antifibrotic drug development. In this study we show the prevalence of SOX9 in biopsies from patients with chronic liver disease correlated with fibrosis severity and accurately predicted disease progression towards cirrhosis. Inactivation of Sox9 in mice protected against both parenchymal and biliary fibrosis, improved liver function and ameliorated chronic inflammation. SOX9 was downstream of mechanosignaling factor, YAP1. These data demonstrate a role for SOX9 in liver fibrosis and open the way for the transcription factor and its dependent pathways as new diagnostic, prognostic and therapeutic targets in patients with liver fibrosis