bluuebunny/crossref_metadata_2025 huggingface dataset:
Exploring Online Shoppers’ Acceptance of Electronic Marketplace Using UTAUT and The Flow Theory
Authors: Faroqi Asif , Apol Pribadi S. , Tri Lathif M.S.
Published: July 2020

Today, e-marketplace is the fastest growing business model. This phenomenon causes competition among e-marketplace providers to become very tight. Some e-marketplace providers become more successful than others with many active users both from buyers and sellers. Identifying what made people using e-marketplace is needed. Existing research has analyzed the user’s motivation for the extrinsic factor. This study discusses online user acceptance of e-marketplace from both intrinsic and extrinsic factors especially online shoppers in Indonesia. Shopping enjoyment as component of flow theory was added to the model to describe the intrinsic factor. This investigation takes the sample from the employees, housewives, and educated. The result shows that both intrinsic and extrinsic factors are influencing the adoption of e-marketplace in Indonesia. E-marketplace service providers can use the result from this investigation to improve their services.
Green Supply Chain Operation Reference (Green SCOR) Performance Evaluation (Case Study: Steel Company)
Authors: Pulansari F , Putri A
Published: July 2020

At the last decade, some environmental problems become increased. For that reason many companies are currently attention to environmental issues. The concern not only in the production process but in the overall activities. This research use the Green Supply Chain Operation Reference (Green SCOR) method to evaluating the green supply chain performance in steel company. Key Performance Indicator divided into five categories i.e. plan, source, make, deliver and return. The result of Monitoring System Performance Indicators is 67.73 (average category). From SNORM value in Traffic Light System, the water used is the lowest. And the value is 38. This shows a lack of performance value and needs improvement.
Designing Passengers Cabin Of Carrier Vehicles Of 6x6 Armour Personnel With Principles Of Ergonomic
Authors: Mahfud Halim , Zulaihah Lilik , Arifati Rifa , Nurfajriah
Published: July 2020

Anoa is one of the primary weaponry defense system of Republic of Indonesia, however the original design Anoa adapted from a similar vehicle from France, whose inhabitants have a different body postures from Indonesian people. This research is aimed to find out whether the Anoa design is ergonomic for Indonesian Army. The research was formed with review the shoter cockpit and passenger cabin at Anoa Panser 2 and then redesign according to percentil 5% & 95% of Indonesian Army personnel anthropometric. In addition to accordingly fitting to personnel anthropometric, improvement also formed based on personnel complaint through Nordic questionnaire. The questionnaire result was processed using QFD method to find out improvement needs that should be prioritized. Based on QFD analisys, improvement that should be prioritized are comfortable seating, appropriate and comfortable doors, safe shooting position, seating for shooter. The next is the design result was simulated using Software Jack to get the value LBA, OWAS, and RULA which used to search the value of PEI of existing and improved design then compare them. According to compared result of PEI value is known that after adjusting the anthropometric size of Indonesia Army the value of PEI becomes smaller.
Hot Air Circulation Analysis In Tumpeng Dryer Machine With Hole Stage Variation In Every Level Rak
Authors: Made Arsawan I , Pujihadi Gede Oka , Bangsa Ketut , Negara Putu Sastra
Published: July 2020

Tumpeng is one of the ceremonial facilities used almost in every Hindu religious ceremony. Many people take advantage of these opportunities as a home-based business. At present the craftsmen encounter obstacles in the process of drying the cone. Currently the drying process still uses the manual method, namely by drying it by utilizing direct sunlight. In the previous research, the product planning for cone drying machine has been carried out, where the results obtained from this study are an increase in the productivity of the drying machine from the drying machine which was previously used by the cone maker of 683.33%. Although there is an increase in the productivity of the drying machine, the air distribution at each level of the rack is not evenly distributed, so the drying machine needs to be reviewed so that the air distribution in the drying chamber becomes more evenly distributed between the racks. From the results of studies conducted by the hot air entering the drying chamber from the results of the previous engine design, it is likely that conditions on level 1 shelves and level 2 shelves have temperatures that are quite high compared to other rack levels because this air is circulated at level 3, 4.5 and 6. To get the air distribution between the level of the rack evenly, it is necessary to do a redesign of the tool. The alternative that can be done is by circulating hot air from rack 1 to rack 6, another alternative is to try variations in air distribution in the drying chamber by varying the cone seat holes.

The redesign method that was carried out was to replace the existing distribution before the air out of the level 3 blower in the rack was changed to the air out of the level 1 rack entry blower, and the cone seat was made varied by random holes, concentric holes and zigzag holes.

From the results of engine redesign after testing the air distribution in the drying chamber with a random hole stacking model, the highest temperature is found in almost all shelf levels, except at the level 1 rack the highest temperature is achieved by a concentric perforated pedestal model that reaches 183 °C. Judging from the hot air distribution, the randomly hollowed cone seat model provides a more even distribution of hot air compared to the concentric and zigzag hollow cone seat model.
Optimization of Metal Inert Gas Welding with Taguchi Method
Authors: Prasetyo Teguh , Muzakki Hakam , Lumintu Ida , Hartanto Dwi
Published: July 2020

Welding parameters affected to weld joint performance. Optimize welding parameter of Metal Inert Gas (MIG) welding is not many studied. This study discussed Optimization from welding parameter of MIG welding used Taguchi Method. Tensile strength of weld joint was affected by welding speed significantly. Factor level welding current 100A, wire speed 65 inch/min, welding speed 6 mm/sec could get the optimize tensile strength. The value of tensile strength optimize when the average 44.07 kg/mm2 of Confirmation experimental and an average value 43.79 kg/mm2 based on Taguchi experiment.
Profile of Antibiotic Use and Germ Map in Pneumonia Patients in Pulmonary Space (Case Study at RSUD dr. Iskak. Tulungagung)
Authors: Ilmi T , Restyana A , Kadir M B A , Yuniarto P F
Published: July 2020

Pneumonia is an infection of lung tissue caused by bacteria, fungi, viruses or parasites. Antibiotics is a major therapy in pneumonia. The aim of this study was to determine the amount of antibiotic use in DDD / 100 patient-days and to know the profile of germs map in pneumonia patients in Pulmonary Room Dr. Iskak Hospital, Tulungagung during January-June 2017.The design of this research is observational research method with retrospective data retrieval from patient medical record data and antibiotic usage data from Pharmacy Installation and microbiology culture result data of patient, then analyzed descriptively. The results showed the total amount of antibiotic in 130 unspecified pneumonia patients non ICU inpatient in Pulmonary Room Dr. Iskak Hospital, Tulungagung during January-June 2017 was 51.28 DDD/100 patient-days. The most antibiotic types are levofloxacin iv 40, 14 DDD/100 patient-days and ceftriaxone 8.71 DDD/100 patient-days. The profile of the pneumonia-causing germs map cannot be determined because there is no data on microbiological culture test results from the patient.
Misty Image Repair System with Dark Channel Prior and CLAHE
Authors: Joni K , Alfita R , Dewi H A
Published: July 2020

The aim of this study is to remove the influence of weather factors in order to improve the visual effects of the image and provide benefit to post-processing. Images captured in hazy or foggy weather conditions can be seriously degraded by scattering of atmospheric particles, which reduces the contrast, changes the color, and makes the object features difficult to identify by human vision and by some outdoor computer vision systems. Therefore image dehazing is an important issue and has been widely researched in the field of computer vision. Image haze removal based on dark channel prior can perform very well. But it didn’t deal with sky region and brightness objects because dark channel prior is not established in these regions. To solve the problem and enhance the contrast, this paper propose to restored the hazy image by adding the contrast limited adaptive histogram equalization. With the contrast limited adaptive histogram equalization method, the results of the dark channel prior results can be contrasted so that the image becomes clearer and more specific. Experimental results showed that such method is MSE 0.256 is equal to PSNR of 54,043 With this research, it is expected that a clean image after processing can provide maximum information to humans.
Comparison of Automatic Water Taps Using Ultrasonic Sensors and PIR Sensors
Authors: Widyaningrum Vivi Tri
Published: July 2020

Water is vital for all living things on the earth, so there must be an effort to save water. One effort to save on water use is by making automatic water taps. Automatic water taps which are meant here are water taps on the sink and also water taps for ablution. The working principle of the two taps is the same, that is, the water tap will open if there is an object (human) detected in front of the water tap. In this automatic faucet system the arduino mega 2560 microcontroller is used as data processor obtained from ultrasonic sensors and Passive Infrared Receiver (PIR) sensors. The two sensors are used interchangeably and the results are compared to determine the difference in response time. Based on the tests that have been done, it is found that the time needed for the ultrasonic sensor to open or close the water tap is faster than the PIR sensor. When opening the tap the time needed by the two sensors is almost the same, which is only 4ms difference. Whereas when closing the tap the time needed for the PIR sensor is much longer, which is more than 4s. This is because the process of returning the sensor to return to normal is not detecting the presence of humans or in other words the sensor does not detect infrared rays tend to require a longer time. As for the ultrasonic sensor because what is detected is the distance, so the object moves from the front of the tap then the distance detected will change immediately so that the tap will immediately close again.
Leader-Follower Formation Tracking Of Multiple Mobile Robots With Constant Leader Velocity
Authors: Latif M.
Published: July 2020

This research presents a tracking formation by multiple mobile robots. The formation used is leader follower approach. Formation control is designed based on the robot kinematics model. Follower is controlled to track the position of the specified formation. Triangle shape is used to the goal formation. Experiments carried out with two scenarios. First, leader moves to a point with linear motion. Second, leader moves along the circular trajectory. Leader motion is constantly with the aim that the formation is rigidly formed while moving towards the goal. Experiments show that robots can perform and maintain formation while achieving goals.
Comparison of Partial Discharge Characteristics Detected by RC Detector and Rectangular Antenna
Authors: Laksono Deni Tri , Laksono Dedi Tri , Khayam Umar
Published: July 2020

This study discusses the method of measuring and detecting Partial Discharge (PD) in high voltage electrical equipment that has the characteristics of being veiled with metal. This research uses the UHF (Ultra High Frequency) method based on IEC 60270 and RC Detector to detect and measure PD. This method uses electromagnetic wave energy emitted by PD sources from the metal box. Use this method to get detection and measure without having to activate the test object. Then the sensors used in testing in this study are rectangular spiral antennas and RC detectors. In addition, various stresses will be tested. The measurement results then compare when evaluating the PD between the Rectangular Spiral antenna and the RC Detector to determine the sensitivity level of the rectangular spiral antenna. The test results show the measurement of partial release of rectangular spiral antenna is greater than outside the metal box and measurement using RC Detector is more sensitive than using a rectangular spiral antenna sensor.
Quadcopter Surveyor Drone Wind Velocity Data Characteristic for Optimal Hotwire Sensor Position
Authors: Rudiyanto Bayu , Hariono Budi , Budiprasojo Azamataufiq
Published: July 2020

In a research and survey sector, drone usually equipped with extra measuring equipment depends on needed. The purpose is to make a survey tools with extra ability to collect data in a wide area with fast and remotely. This type of drone known as a modified drone or a surveyor drone.

One of surveyor drone type is a quadcopter wind velocity surveyor drone. The problem is, drone also knowing have a turbulent air effect surround its propellers, and its suspected to affect the ability of the anemometer collecting the correct data.

This research will investigate that phenomenon, focused on the data of wind velocity with a variety of drone propeller rotation speed. Wind velocity anemometer sensor position places surrounding the drone. The drone use in this research is a prototype drone which is equipped with hot wire anemometer data logger. hot wire anemometer memory card data logger type uses in this research is a regular type and already modified to installed it on a drone.

Research will be focused on the search of an answer about how big the deviation of wind velocity data affected by drone propeller wind turbulence.
Home Electrical Energy Management System Using DijCostMin Algorithm
Authors: Akbar Adhiel , Halomoan Junartho , Silalahi Desri Kristina
Published: July 2020

In the afternoon until night, an electrical load is increased, it happened because to increase the usage of electrical devices by customers. These conditions in which increased electricity consumption by buyers at the same time with the quantity a large power have not been able to handle properly by PLN as the supplier of electrical energy in Indonesia. The impact is the occurrence of the power outage in rotation, to reduce these all, needs to be setting the use of electric power appropriate, in order to achieve the purpose of balance between demand and supply for electricity energy; especially on the household sectors. One of the tricks is enacting the management of the load on the side of their customers or well known as Demand-Side Management (DSM) and apply dynamic pricing on electricity tariff from the peak time and non-peak time. Home Electrical Energy Management System (HEEMS) is a system for managing electrical energy-based method DSM and apply dynamic pricing. HEEMS allows users to manage and monitor the usage of electricity. HEEMS serves to do scheduling on the use of an electrical device DijCostMin Algorithm based on data planning the use of devices electricity or load forecasting entered by users. The method that proposed is a success and effective to reduce energy demand is about 22.69% when peak time and reduce bills of electricity is about 8.38%.
Precipitation Rate Investigation on Precipitated Magnesium Carbonate by Ultrasonic of Magnesium Bicarbonate
Authors: Rhamdani A R , Sulistyono E , Yunita F E , Natasha N C , Firdiyono F. , Priyanti A D
Published: July 2020

Indonesia has a lot of dolomite reserves. Magnesium carbonate can be synthesized from dolomite. One of the main steps that requires a lot of energy are magnesium bicarbonate thermal decomposition. Magnesium bicarbonate solution are heated to make magnesium carbonate as precipitate. One of the ways to improve this process are by using ultrasonic waves as energy carrier. The purpose of this study is to find the effect of ultrasonic waves heating (sonochemistry) to thermal decomposition of magnesium bicarbonate. In this work, the author conducted ultrasonic heating with the amplitude of the waves varied around 20 µm and 30 µm for 35 minutes. Conventional heating using heat plate was also conducted and compared with ultrasonic heating. Higher decomposition ratio was reached on samples heated using ultrasonic waves with the value of 85.70% compared to conventional heating with decomposition ratio of only 50.08%. Amplitude effect on decomposition ratio were also observed. Higher amplitude made decomposition rate faster.
Logit Model for Transportation Mode Choice in Berau Regency East Kalimantan
Authors: Agustaniah Rosa , Wicaksono Achmad
Published: July 2020

In big cities thousands of public transportation is very easy to find because it fills the streets and can cause traffic jams. Another case that occurred in Berau District, public transportation was almost non-existent. On the streets private vehicles and transport companies dominate. The number of public transport fleets such as city transportation and buses, is very small in number. Berau Regency has many attractions, but tourists will find it difficult to find public transportation. This study aims to determine the selection of transportation mode choice in Berau Regency using the logit model with the assumed road users choose to use public transport or private transportation. Travel attributes that influence mode choice in Berau district are travel time, transportation costs, space availability, comfort and safety. The cost of private transportation is the same as the cost of public transportation, which is about 79% of people who will still choose to use private transportation. This condition will be achieved if the cost of public transportation is 1.4 times cheaper than the cost of private transportation.
Effect of HDPE Based Wastes on the Performance of AC-WC Mixture with RAP as coarse aggregate substitute
Authors: Mahardi P , Risdianto Y , Wibisono E , Karismanan
Published: July 2020

One attempt to avoid early pavement damage is to enhance asphalt quality as an aggregate binder. The addition of polymeric materials is frequently used to improve asphalt quality, particularly asphalt rigidity. Increased rigidity will enhance pavement performance against rutting, bleeding, and swelling, particularly in summer with a relatively elevated temperature. This study uses High Density Polyethylene (HDPE) polymer waste as a modifier in a mixture of Asphalt Concrete-Wearing Course (AC-WC) which also utilizes RAP waste as a coarse aggregate substitute. The aim of this study is to analyse the to analyse effect of waste materials on the AC-WC performance. Analysis was carried out after the Marshall test to obtain the values of air void, Void in Mineral Aggregate (VMA), Void Filled with Asphalt (VFA) stability, flow and Marshall Quotient (MQ). Marshall samples prepared with dry method modified HDPE asphalt binder, given a limit on the specifications of the number of each specimen. The percentage of HDPE as asphalt mixture is 0%, 1.6%, 1.8%, 2.0%, 2.2%, and 2.4% asphalt weight. The optimum asphalt level (KAO) used is 5.25%. Marshall test shows that the addition of 1.6% of HDPE in the AC-WC mixture and RAP can increase mixture stability by 1.74% and flow by 3.69%.
Model of Passengger Satisfaction on the Service Performance of the Gapura Surya Nusantara Passenger Port PT. Pelabuhan Indonesia III Branch Tanjung Perak Surabaya
Authors: Supriyatno D , Widayanti F R
Published: July 2020

Infrastructure is one of the supporting activities of transportation, such as airports, halte, terminals, and port buildings. The port terminal is one of the transportation infrastructure buildings used by passengers when they travel. The port terminal is expected to be able to provide good facilities for passengers while waiting for transportation. For this reason, it is necessary to do a model of passenger satisfaction on the performance of the passenger terminal in order to know what factors influence passenger satisfaction. The measurement of passenger satisfaction uses the classic assumption test method, and also tests the validity and reliability of the questionnaire submitted to the passenger. From the research that has been done, we get the final model of Passenger Satisfaction on the Service Performance of the Gapura Surya Nusantara Passenger Terminal as follows: Y1 = 62.325 + 0.714X1 + 0.020X2 + 0.040X5 + 0575X6 + 0.218X8 + 0.134X9 + 0.356X11 + 0.550X13 + 0.476 X14 + 0.488X17 - 0.658X19, the model is influenced by nine variables.
Housing Drainage Network Evaluation in Education Teacher Road Merauke
Authors: Utary C , Akbar M , Kakerissa Y
Published: July 2020

Increasing population, residential and land development of the narrow lead to flooding or waterlogging during the rainy season. Based on the author’s observation that this occurs as a result of population growth and settlement. Areas that were once as a rain water reservoir and the water reservoir tidal inland transformed into residential areas and development centers of economic activity, and social services. The residential area of Merauke teacher education road is low-lying areas and densely populated, thus increasing the flow of water entering the waste stream. Based on the calculation of discharge, obtained Qk = 79,586,978.48 m3 / sec. The magnitude of the flood Q Qb = 24,488,511, 58 m3 / sec obtained high discharge may cause flooding in the residential area of teacher education path Merauke. So it is necessary to increase the dimensions of the existing channels in order to cope with flooding during the rainy season.
Bamboo Pile Installed Into Soft Ground to Increase Required Reinforcement Force for Coastal Dike
Authors: Suyuti  , Sabaruddin  , Hakim Raudha
Published: July 2020

There are three thousand kilometers of six thousand three hundred kilometers were occured abrasion in coastal area, in North Maluku. Those accidents caused by natural disaster such as big waves from seashore. In order to avoid that risk natural disaster for living safe, local government must to construct a dike. However that construction is often built on the deposit soft soils in lowlands. In which, a required stability of it’s dike on the soft ground must be satisfied to support loads. Recently, the traditional way is mostly familiar to increase soil stiffness for embankments, which used local material such bamboo pile. It is pile material installed into soft ground before construct an embankment. Therefore, the study aims is focused on observation of the required renforcement force of the ground after installed with bamboo piles which investigated by full-scale test. Finally, the reliability performance of required reinforcement force of soft ground with bamboo pile, which is derived by several empirical equations.
Measurement of standard glucose solution using silver nanoparticle
Authors: Maarebia R Z , Nurvitasari E , Sumanik N B
Published: July 2020

This study aims to determine the effect of using silver nanoparticles on electrodes to measure standard glucose solutions using the voltammetry method. In this study, silver nanoparticles were used which have been present and have been synthesized and characterized by using the extract agent of water extract of Myrmecodia pendans and AgNO3 as metal precursors. Detection of glucose with variations in concentration characterized by limit detection obtained a concentration of detection limit of 4.53 mM and sensor sensitivity of 1.91 A.mM−11.mm−2.
Statistical reasoning levels of high school students in solving statistics related problems
Authors: Setianingsih R , Rahmah DA
Published: July 2020

Statistical reasoning is one of the focus of statistical learning at this time. Statistical reasoning is needed by students to understand the concept of statistics, to process information, and to draw conclusions both in statistical learning and in daily life. This research is a descriptive study with a qualitative approach that aims to describe the level of statistical reasoning of high school students who have low mathematical abilities in solving statistics related problems in each statistical process, namely the process of describing data, the process of organizing and reducing data, the process of representing data, as well as the process of analyzing and interpreting data. The subjects in this study were two high school students of grade XII who had low mathematical abilities based on the math skills tests that had been given. The results showed that both subjects in the process of describing data successively reached level 2 (Verbal Reasoning) and level 4 (Procedural Reasoning). Meanwhile, in the process of organizing and reducing data and the process of representing data, the first and second subjects both reached level 1 (Idiosyncratic Reasoning), while in the process of analyzing and interpreting data, the first and second subjects both reached level 1 (Idiosyncratic Reasoning).
Online-based Learning to Train Students Critical Thinking in Physics Teacher Training Programs
Authors: Kustijono R , Hakim SR
Published: July 2020

The research objective is to describe the effectiveness of online-based learning to train students’ critical thinking in physics teacher training programs. The elements of critical thinking are: analyzing, evaluating, implementing, generating ideas, and expressing ideas. This type of research is quasi-experimental with a time-series design. Effectiveness is seen from the ability to train the elements of critical thinking and student responses. Manipulation variable is online-based physics learning and the dependent variable is an element of critical thinking. The research subjects were 40 students of the Physics teacher training program at Universitas Negeri Surabaya. The elements of critical thinking and student responses are assessed using a Likert scale. Descriptive statistics are used to analyze data. Learning is effective if the average value of critical thinking elements ≥ 3.1 (scale 0-5) for each module is discussed with a fixed or upward trend. Student responses are effective if the percentage is ≥ 61%. The results obtained: 1) the average score of critical thinking elements ≥ 3.1 2) The percentage of student responses ≥ 61%. These results indicate that online-based learning can effectively train students’ critical thinking in the Physics Teacher Training Program and get a positive response.
Implementation of software geogebra on triangles
Authors: Nurhayati  , Palobo Markus , Nur’aini Khumaeroh Dwi , Natsir Irmawaty , Meirista Etriana , Munfarikhatin Anis
Published: July 2020

Mathematics teaching is a learning process gives an understanding of mathematical concepts for students. The basic concepts of mathematics must be embedded well in each student so that understanding concepts at an advanced level can be easily mastered. Mathematics teachers play an important role regarding the problems faced by students when learning mathematics in class. A math teacher in addition to having the ability to master mathematical concepts well, is also required the ability to manage the class so that students can understand the concept well and learning achievement is in the high category. Mathematics is a subject consisting of great ideas that are connected to each other so that understanding cannot be separated because each concept will contribute to the other concepts. Most students still say that mathematics is a difficult and uninteresting lesson, therefore, a teacher needs to apply specific strategies used in the mathematics learning process so that it can change students’ perceptions of mathematics into an interesting and easy lesson. The use of technology can help teachers and students learn mathematics, for example the use of GeoGebra software. GeoGebra software has the benefit of being able to make geometric paintings that are fast and precise compared to using paper and pencil and the existence of animation facilities provides a clear visual experience for students and teachers. One of the geometry concepts is to construct a flat triangle, in this study the discussion is to determine the special lines on the triangle using GeoGebra software and then determine the intersection of the special lines of the triangle.
Impact of Organic Matter on The Phytoaccumuloation Technology of Copper in Soils by Ipomea reptans
Authors: Muliadi  , Liestianty D , Nafie N La , Irdhawati  , Yanny  , Mamun S Al
Published: July 2020

Heavy metal contamination in soil is often a problem in living organisms. The efforts to control heavy metal contamination in soils can be done by using living organism. The phenomenon of the uptake, accumulation and storage of heavy metals in the plants’ body is known as phytoaccumulation. Phytoaccumulation research of copper metal has been carried out with application of material waste i.e. sawdust, charcoal and compost used by Ipomea reptans. The analytical method used is atomic absorption spectrophotometry (AAS). The results showed that the impact of the application of organic waste material curbed the influx of copper into Ipomea reptans with the phytoaccumulation ability to control plants, sawdust, charcoal and compost of 231.1, 229.7, 196.1, and 152 mg/kg. The bioaccumulation factor value in each application is 0:33, 0:26, 0:34 and 0:19 respectively. There were significant differences between the phytoaccumulation ability of copper metals done by Ipomea reptans.
Effect of Addition of Different Egg Yolks in Basic Tris-Soya Diluent on Quality, Membrane Integrity of Senduro Goat Sperm, and Free Radicals during Storage at Temperature of 4-5° C
Authors: Ducha N , Budijastuti W , Rahayu D A
Published: July 2020

Semen diluents need macromolecules to protect sperm from the impact of temperature during storage and the presence of free radicals. The purpose of this study was to examine the effect of adding yolk from different types of eggs to the quality and integrity of the sperm membrane. Fresh semen was diluted with basic tris-soya diluent wich was added with different types of chicken egg yolk, such as local chicken eggs and leghorn chicken eggs. As a control group, fresh semen was diluted with basic tris-soya diluent without the addition of egg yolk. The addition of egg yolk was 20% of the diluent volume. Quality observations include motility and viability of sperm. Sperm motility was observed using a microscope with 200 X magnification. The sperm viability was observed using the eosin and negrosin staining method, then it observed under a microscope with 200 X magnification. The integrity of sperm membrane was observed using the HOST method, and then observed under a microscope with 200 X magnification. Free radicals then observed with MDA test. The results showed that the motility, viability and membrane integrity of sperm only lasted until the 12 hour of storage, with the greatest motility, viability and membrane integrity obtained in diluents with the addition of leghorn chicken egg yolk. The smallest MDA test was 2.72, which obtained from diluents with the addition of leghorn chicken egg yolk. Based on the results of the study it can be concluded that the leghorn chicken egg yolk has the best ability to maintain the quality of Senduro Goat sperm during 4-5°C storage temperature.
Selection In Vitro Flower King Planlet With Polyethylen Glicol (Peg) 6000 On Drought As An Animal Feeding
Authors: Andari Gardis , Muchlis Dirwan , Nurcholis  , Salamony Syetiel M. , Amir Astaman , Panga Nurhaya J
Published: July 2020

Bananas besides being a superior fruit plant in Indonesia, banana plants can be utilized as animal feedstocks, The results showed that the administration of banana stems as animal feed did not have a negative effect on the appearance of young sheep, and even showed more nitrogen in comparison with sheep receiving control rations. Banana skin can be used as a substitute feed for livestock, especially in broilers. Banana skin has been used as poultry feed, a mixture of banana peel and coconut pulp with a ratio of 2: 1 can be used up to 15% substitute for corn in broiler feed. Banana skin fermented with probiotics can increase crude protein content by 14.88% and rough seats by 11.43% which is good for broiler growth. Drought that occurs every year is the main limitation of the growth of banana plants. Drought in plants can result in slow leaf area increase and influence on the rate of photosynthesis so that it can reduce productivity and growth of plants. PEG 6000 was used as an effort in early detection of genotypes from plant varieties that tolerated drought stress. So far there has never been a study of plantain feathers against drought stress using PEG 6000. So this research is interesting to do. This research was conducted to obtain candidates for plantain plantain which are tolerant to drought as animal feed
Evaluation and projection of snowfall changes in High Mountain Asia based on NASA’s NEX-GDDP high-resolution daily downscaled dataset
Authors: Li Yupeng , Chen Yaning , Wang Fei , He Yaqian , Li Zhi
Published: July 2020

High Mountain Asia (HMA), which includes the Tibetan Plateau, Tienshan Mountains and surrounding region, has abundant snowfall and a long period of snow cover annually. The headwaters of many prominent Asian rivers depend in part on HMA meltwater. In this study, we evaluate projected changes in mean snowfall (Smean), snowfall days (Sd), and snowfall fraction (Sf) for the years 2070–2099 relative to 1976–2005, under the Representative Concentration Pathway 4.5 (RCP4.5) and 8.5 (RCP8.5) emission scenarios. An evaluation of the results shows that while NASA’s NEX-GDDP (National Aeronautics and Space Administration Earth Exchange Global Daily Downscaled Projections) high-resolution daily downscaled dataset can successfully capture the distribution of mean snowfall climatology, it has a strong bias for extreme snowfall indices. In general, the projected increase of temperature under RCP4.5 and RCP8.5—especially in winter—will result in a decrease in snowfall amount (−18.9%, −32.8%), fewer snowfall days (−29.6%, −47.3%), and less precipitation falling as snow (−26.7%, −42.3%). Furthermore, under high emission scenarios, rain-dominated regions are projected to expand 53.9%, while snow-dominated areas will only account for 17.9% of the entire HMA. Spatially, snowfall shows a more robust decline in eastern HMA (e.g. East Tienshan, East Kun Lun, Qilian, South and Eastern Tibet, and Hengduan) than in western HMA (e.g. Hissar Alay, Pamir, and Karakoram). This difference can be attributed to various environmental factors, such as climatology, elevation influences, and the unique seasonal recycle between the two regions.
Comment on ‘Heat conduction: a telegraph-type model with self-similar behavior of solutions’
Authors: Pantokratoras Asterios
Published: July 2020

In the above paper some equations are wrong.
Scientists strike in racism protest
Authors: Gwynne Peter , Durrani Matin
Published: July 2020

Researchers, scientific societies and publishers took part in a one-day strike last month to consider how to combat racism and discrimination in science, as Peter Gwynne and Matin Durrani report
SpaceX begins new era of commercial crewed space flight
Authors: Banks Michael
Published: July 2020

NASA astronauts have been successfully flown to the International Space Station (ISS) by a commercial vehicle for the first time.
US decadal survey calls for boost in under-represented groups
Authors: Gwynne Peter
Published: July 2020

Plasma science in the US needs to become more diverse to include women and under-represented minorities. That is the conclusion of a report by the National Academies of Science, Engineering and Medicine, which says that as researchers in the field move towards retirement, government and universities should ensure enough people stay in the field.
Scientists tackle coronavirus transmission
Authors: Blaustein Richard
Published: July 2020

Atmospheric scientists have a key role to play in understanding the size and trajectories of aerosols carrying the novel coronavirus SARS-CoV-2, which causes the disease COVID-19.
Physicists call for Irish science ministry
Authors: King Anthony
Published: July 2020

More than 1700 scientists in Ireland have signed an open letter to the country’s elected representatives calling for a full ministerial position for science and higher education.
The danger of going online only
Authors: Collins Harry , Barnes Bill , Sapienza Riccardo
Published: July 2020

Harry Collins, Bill Barnes and Riccardo Sapienza warn against a wholesale shift to virtual workshops and conferences following the COVID-19 pandemic
Transmogrified physics II
Authors: Crease Robert P
Published: July 2020

Robert P Crease reports on your latest work in the exciting new scientific field he discovered
Power predicaments
Authors: Wilson Norman
Published: July 2020

In response to Alec Beardsell’s letter “Power predictions” (May p26), which was a response to Norman Wilson’s letter “Power problems” (April p24), which said that Dave Elliot (January p19) presented an over-optimistic view of the capabilities of renewable energy.
Electric slide
Authors: Oborn Keith
Published: July 2020

In response to Alan T Collins’ letter “Frying pan to fire” (February p21), which touched on clean electric sources for electric vehicles.
Fighting flat-Earth theory
Authors: Brazil Rachel
Published: July 2020

Physicists will find it shocking, but there are plenty of people around the world who genuinely believe the Earth is flat. Rachel Brazil explores why such views are increasingly taking hold and how the physics community should best respond
Topological insulators enter the fourth dimension
Authors: Cartlidge Edwin
Published: July 2020

Physicists in Singapore and the UK have shown that topological insulators can exist in four spatial dimensions.
Iron is made transparent to gamma rays
Authors: Wogan Tim
Published: July 2020

Physicists in the US and Russia have demonstrated that iron nuclei can be made transparent to gamma rays that they would normally absorb.
Hydrogen flames spread through fractal-like patterns
Authors: Jarman Sam
Published: July 2020

Propagating hydrogen flames can spread efficiently to access new fuel by breaking into fractal-like patterns. That is according to researchers in Spain and Germany who say their results could provide important new information in designing storage cells for hydrogen fuel (Phys. Rev. Lett.
124 174501).
The usual policy levers are not engaging consumers in the transition to electric vehicles: a case of Sacramento, California
Authors: Hardman Scott , Kurani Kenneth S , Chakraborty Debapriya
Published: July 2020

We investigate whether the population of all vehicle owning households has already considered purchasing a plug-in hybrid (PHEV) or battery electric vehicle (BEV). First, we explore purchase engagement and find that even in the city where Zero Emission Vehicle (ZEV) policy originates (Sacramento, California) few consumers are engaged with PEVs, few have considered purchasing one, many cannot name a single BEV or PHEV presently for sale, and many are not aware of incentives to buy or advertising of them. Next we model purchase consideration using ordinal logistic models to understand correlations of purchase consideration with: awareness of incentives, advertising, or ride and drives; whether respondents know how PHEVs and BEVs are fueled or the name of one for sale, have sought information on PHEVs and BEVs or have spoken to an owner; the density of chargers and PHEVs and BEVs in respondents’ home location; and respondent socio-demographics. We do not find any relationship between common engagement strategies (e.g. advertising, incentives, and ride and drives) and whether consumers have already considered buying a PHEV or BEV. Those who have considered purchasing a BEV or PHEV have done so due to prior interest.
An update on engineering issues concerning stratospheric aerosol injection for geoengineering
Authors: Lockley Andrew , MacMartin Doug , Hunt Hugh
Published: July 2020

Solar Radiation Management (SRM) geoengineering is a proposed response to anthropogenic global warming (AGW). Stratospheric aerosol injection (SAI) is one proposed method, reliant on lofting material into the stratosphere. Engineering reviews related to this technology approach have been sparse, with most major primary analyses now at least five years old. We attempt to bridge this gap—with a short, qualitative review of recent developments in various fields of engineering that have potential applicability to SAI. Our analysis shows that a new conventional aircraft design is still likely to be the most dependable and affordable technology solution (cost estimates start around $1000–1500 per ton lofted), with hybrid or vacuum airships a potential challenger. Rockets, gas guns and MAGLEV/coilguns show some potential—although they lack the inherent level-flight capability that would be needed for direct aerosol distribution (versus distribution of gaseous precursors), without substantial additional engineering. Should very high-altitude access be required, rockets, jet-hybrid rockets, and various guns (especially light-gas guns) potentially offer the required capability. Costs and performance for tethered balloons remain highly uncertain. Towers are not found to be promising. The extreme accessibility of free balloons suggests that this method may be used primarily for reasons of political leverage, as opposed to being an optimal engineering solution.
SYLOS lasers – the frontier of few-cycle, multi-TW, kHz lasers for ultrafast applications at extreme light infrastructure attosecond light pulse source
Authors: Toth S , Stanislauskas T , Balciunas I , Budriunas R , Adamonis J , Danilevicius R , Viskontas K , Lengvinas D , Veitas G , Gadonas D , Varanavičius A , Csontos J , Somoskoi T , Toth L , Borzsonyi A , Osvay K
Published: July 2020

The extreme light infrastructure attosecond light pulse source offers beamtime for users of various attosecond and particle sources driven by versatile laser systems. Here we report on the state of the art of a few-cycle, multi-TW, 1kHz repetition rate laser system, now fully operational in the facility. The system is based on four stages of optical parametric amplifiers (OPAs) pumped by a total of 320mJ, 80ps frequency-doubled Nd:YAG laser pulses. All OPA stages utilize double crystal configuration, which design has been also confirmed by model calculations. The 1kHz SYLOS 2 system produces 32mJ laser pulses around a central wavelength of 891nm with 6.6fs (<2.3 optical cycles) pulse duration exceeding the peak power of 4.8 TW on a daily basis. The recorded best pulse duration is 6.3fs, which corresponds to 2.12 cycles and 5.1 TW peak power. During long-term (24h) performance tests, energy stability of 1.2%, carrier-envelope phase (CEP) stability of 210mrad, and pointing stability of 0.4µrad were demonstrated, while the Strehl ratio of the beam is kept above 0.75. In order to help the alignment of all the different experiments at the facility and to reduce the workload on SYLOS 2 system, a second laser system has been developed. The so-called SYLOS Experimental Alignment (SEA) laser mimicks the performance of the SYLOS 2 laser, but at a repetition rate two orders of magnitude lower and without CEP-stabilization. The three single-crystal OPA stages of the SEA laser provide 42mJ pulse energy for the users, while having energy stability of 0.87% and sub-13fs pulse duration at a repetition rate ranging from a single shot up to 10Hz.
Insights on developing a field hospital formulary and medication distribution process in preparation for a second surge of COVID-19 cases
Authors: Bazzell Brian , Wagner Deb , Durant Karin M , Callahan Brian
Published: July 2020

Purpose

The coronavirus disease 2019 (COVID-19) pandemic has caused health systems across the country to plan for field hospitals to care for patients outside of traditional healthcare settings in the event of a second surge. Here we describe key considerations for the implementation of pharmacy operations and a field hospital formulary at an offsite location within a 2-week time frame.

Development of an offsite field hospital formulary is first dependent on the location and patient population defined for the field hospital. Creation of a limited formulary for a planned field hospital in Michigan involved reviewing physical space limitations and drug distribution workflows, assessing current prescribing trends, creating drug categories, and creating formulary guidelines to limit formulary options in each therapeutic category. Ultimately, our institution developed a 140-medication field hospital formulary, a process to enable appropriate use of nonformulary drugs, and a mixed operations model including automated dispensing cabinets and a manual cart-fill process. Although the institution did not have to open the field hospital, the process used for developing the formulary and determining distribution models will allow for an immediate implementation if a second surge occurs.

Conclusion

A methodical approach to developing limited formularies and pharmacy operations in a field hospital setting will allow health systems to establish efficient and effective medication distribution services in the event of a second surge of COVID-19 cases.
Open-source institutional guideline recommendations during the COVID-19 pandemic
Authors: Collins Curtis D , Huang Jean , Potoski Brian A
Published: July 2020

Purpose

The global coronavirus disease 2019 (COVID-19) pandemic and the search for ways in which to provide the best available care have created unprecedented times in terms of rapidly evolving reports of available treatment options. The primary objective of our analysis was to categorize online, open-source guidance to determine how US institutions approached their recommendations for management of patients with COVID-19 in the early weeks of the pandemic.

Methods

A search for open-source, online institutional guidelines for the treatment of COVID-19 was conducted using predefined criteria. The search was limited to the United States and conducted from April 12 through 14, 2020, and again on April 22, 2020. Searches were conducted at 2 points in time in order to identify changes in treatment recommendations due to evolving literature or institutional experience. Treatment recommendations, including guidance on antiviral therapy, corticosteroid and interleukin-6 inhibitor use, and nutritional supplementation were compared.

Results

Of the 105 institutions that met initial screening criteria, 14 institutions (13.3%) had online COVID-19 guidance available. Supportive care and clinical trial enrollment were the primary recommendations in all evaluated guidance. Recommendations to consider antimicrobial and adjunctive therapy varied. Eighty-six percent of guidelines contained recommendations for use, or consideration of use, of hydroxychloroquine. Guidance from 2 institutions mentioned use of hydroxychloroquine and azithromycin in combination. Of the 13 institutions listing hydroxychloroquine dosing recommendations, 62% recommended maintenance dosing of 200 mg twice daily. Infectious diseases or other specialty consultation was required by 89% of institutions using interleukin-6 inhibitors for COVID-19 management.

Conclusion

Overall, the analysis revealed variability in treatment or supplemental pharmacologic therapy for the management of COVID-19.