Search

ABSTRACT. Dedak padi merupakan salah satu bahan pakan yang digunakan untuk pakan ternak, namun terdapat kendala dalam penggunaannya, salah satunya adalah rendahnya daya simpan. Penelitian ini bertujuan untuk menentukan pengaruh waktu penyimpanan dan jenis kemasan terhadap perubahan kadar air dan kualitas sifat fisik dedak padi. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan pola faktorial 3 x 4 dan 4 ulangan. Faktor-faktor yang diteliti terdiri dari A: waktu simpan (0, 30, 60 hari) dan B: jenis kemasan (karung plastik polipropena, karung goni, karung plastik polietilena, dan karung hermetik). Parameter yang diamati adalah perubahan kadar air (KA), kerapatan tumpukan (KT), kerapatan pemadatan tumpukan (KPT) dan berat jenis (BJ). Data dianalisis dengan uji sidik ragam dan bila terjadi perbedaan (p0,05) dilanjutkan dengan uji Tukey. Jumlah serangga yang tumbuh dianalisis secara deskriptif. Hasil penelitian menunjukkan semua perlakuan berpengaruh nyata (p0,05) dengan interaksi nyata (p0,05) terhadap semua peubah. Waktu simpan nyata (p0,05) menaikkan kadar air dan nyata (p0,05) menurunkan nilai KT, KPT dan BJ dedak padi. Jenis karung hermetik seiring waktu penyimpanan nyata (p0,05) merupakan karung terbaik dan karung polipropena merupakan karung terburuk dalam hal mempertahankan kualitas dedak padi. Jumlah serangga semakin meningkat seiring waktu simpan dengan jumlah paling sedikit ditemukan pada karung hermetik. Dapat disimpulkan penggunaan kemasan hermetik lebih baik dalam mempertahankan kandungan kadar air dan nilai sifat fisik dengan waktu optimal penyimpanan kurang dari 60 hari. (Effect of storage time and packaging type on moisture content and physical properties of rice bran) ABSTRAK. Rice bran is a valuable feed ingredient for animal feed, but its low storage stability poses challenges for its long-term utilization. This study investigates the effects of storage time and packaging type on moisture content and the quality of physical properties of rice bran. A Completely Randomized Design (CRD) factorial design (3 x 4) with 4 replications was employed. Factor A examined storage time (0, 30, 60 days), and factor B explored different packaging types (polypropylene sack, burlap sack, polyethylene sack, and hermetic sack). The observed variables were moisture content, bulk density, tapped density, and specific gravity. Insect infestation was also assessed descriptively. ANOVA was used to analyze the data, and the Tukey test was applied in cases of significant differences (p0.05). The results revealed that both treatments and their interaction had significant effects (p0.05) on all measured parameters. Storage time significantly (p0.05) increased moisture content and decreased (p0.05) bulk density, tapped density, and specific gravity of rice bran. Insect populations increased with storage time, with the lowest infestation observed in the hermetic sack. The hermetic sack consistently outperformed other packaging types in maintaining moisture content and the quality of physical properties of rice bran throughout the storage period. The polypropene sack exhibited the poorest performance, suggesting an optimal storage time of less than 60 days for rice bran stored in this type of packaging.

The Facility for Rare Isotope Beams (FRIB) began operation with 1 kW beam power for scientific users in May 2022 upon completion of 8 years of project construction. The ramp-up to the ultimate beam power of 400 kW, planned over a 6-year period, will enable the facility to reach its full potential for scientific discovery in isotope science and applications. In December 2023, a record-high beam power of 10.4 kW uranium was delivered to the target. Technological developments and accelerator improvements are being made over the entire facility and are key to completion of the power ramp-up. Major technological developments entail the phased deployment of high-power beam-intercepting systems, including the charge strippers, the charge selection systems, the production target, and the beam dump, along with support systems, including non-conventional utilities (NCU) and remote handling facilities. Major accelerator improvements include renovations to aging legacy systems associated with experimental beam lines and system automation for improved operational efficiency and better machine availability. Experience must be gained to safely handle the increased radiological impacts associated with high beam power; extensive machine studies and advanced beam tuning procedures are needed to minimize uncontrolled beam losses for the desired operating conditions. This paper discusses the technological developments and accelerator improvements with emphasis on major R&D efforts.

A case of multiple embolisms in the left coronary artery as a rare first manifestation of left atrial myxoma is reported. A patient with embolic myocardial infarction and congestive heart failure was treated by percutaneous aspirations and balloon dilatations. Transesophageal echocardiography disclosed a villous myxoma with high embolic potential. Surgical resection of the tumour, suturing of a patent foramen ovale suture and an annuloplasty of the dilated tricuspid annulus was performed the third day after the admission. Recovery of the documented left ventricular systolic function can be explained by resorption of myxomatous material. The patient was discharged ten days after the surgery.

Predicting long-term kidney allograft failure is an unmet need for clinical care and clinical trial optimization in children. We aimed to validate a kidney allograft failure risk prediction system in a large international cohort of pediatric kidney transplant recipients. Patients from 20 centers in Europe and the United States, transplanted between 2004 and 2017, were included. Allograft assessment included estimated glomerular filtration rate, urine protein-to-creatinine ratio, circulating antihuman leukocyte antigen donor-specific antibody, and kidney allograft histology. Individual predictions of allograft failure were calculated using the integrative box (iBox) system. Prediction performances were assessed using discrimination and calibration. The allograft evaluations were performed in 706 kidney transplant recipients at a median time of 9.1 (interquartile range, 3.3-19.2) months posttransplant; mean estimated glomerular filtration rate was 68.7 ± 28.1 mL/min/1.73 m2, and median urine protein-to-creatinine ratio was 0.1 (0.0-0.4) g/g, and 134 (19.0%) patients had antihuman leukocyte antigen donor-specific antibodies. The iBox exhibited accurate calibration and discrimination for predicting the outcomes up to 10 years after evaluation, with a C-index of 0.81 (95% confidence interval, 0.75-0.87). This study confirms the generalizability of the iBox to predict long-term kidney allograft failure in children, with performances similar to those reported in adults. These results support the use of the iBox to improve patient monitoring and facilitate clinical trials in children.

In this article, we have examined the effectiveness of teaching economics through project-based learning. For this purpose, we carried out an experiment at secondary schools in the Slovak Republic. We divided 123 students into control and experimental groups. In both groups, teaching was carried out on the same topic by the same teacher in the same time frame. The control group completed the traditional verbal-visual teaching with the help of a blackboard. The experimental group completed project-based learning. Then, in both groups, the students' knowledge was ascertained in the same way. We compared the results with inductive statistics to see if the difference between the results of the two groups was significant. For comparison, we chose a parametric two-sample t-test, which is used to compare the mean values of two independent samples. We managed to prove higher efficiency of teaching using project-based learning compared to traditional verbal-visual teaching. We think that project-based learning has its place among teaching methods, as it can have also other advantages over traditional teaching. This is also indicated by the results of a questionnaire, which we used to find out the opinions of students after the end of the experiment. Almost all students expressed the belief that project-based learning is very interesting.