TENCON 2021 - 2021 IEEE Region 10 Conference (TENCON)
Currently, much medical personnel died because of being infected by COVID-19 and because of low p... more Currently, much medical personnel died because of being infected by COVID-19 and because of low personal protective facilities and the duties of medical personnel that must carry out to deliver the logistics to patients and make many contacts between the medical personnel and patients of COVID-19. Mobile robots are considered the right solution to complete this problem. With mobile robots, hospitals or the place of isolation can minimize contact between medical personnel and patients of COVID-19 by carrying out the logistic delivery task. To deliver the logistic, a mobile robot must have low-level control, and the mechanism to carry out the workpiece also have the mechanism to open the door. The mechanism to carry out the workpiece is a system to pick up and place the rack of logistics from one place to another. In this study, the low-level control was applied using a PID control with the parameter's value $\boldsymbol{k}_{\boldsymbol{p}}=500,\boldsymbol{t}_{\boldsymbol{i}}=0.001$, and $\boldsymbol{t}_{\boldsymbol{d}}=0.001$ and teleoperation to control the mobile robot manually, so the mobile robot was able to move and carry out the load with the maximum value is 13 kg also open the door. Based on the results of the tests that have been carried out, the mobile robot with the proposed low-level control and the object management system can do the delivery task to reduce contact between medical personnel and patients of COVID-19, also the mobile robot can be controlled manually.
The era of digitalization is underway in Indonesia. One of the influential aspects is the busines... more The era of digitalization is underway in Indonesia. One of the influential aspects is the business environment. In the business world, economic transaction are vital in developing a cashless society. The purposed of the study to assess the socio demographic variables (gender, marital status, education level, occupation dan income) correlate of the payments preferences. The sampling method was purposive sampling. An online survey of 100 participants was conducted among a sample of people who aged 20 years and over and have used e-money for three months. The survey included two parts: first, socio demographic characteristics and second the preferency of payments. Cross tabulation and Chi Squared test were used. The results showed that the majority participans was under 40 years old and have more one instruments of e-money. E-money used for on line shopping, transportation and to pay the bills. The conclution of the study there was no significant correlation between the preference of...
This study aims to discuss and analyze the role of the Governor as the Representative of the Cent... more This study aims to discuss and analyze the role of the Governor as the Representative of the Central Government in the supervision of Regional Regulations on Regional Taxes and Levies in accordance with Act No. 23 of 2014 concerning Regional Government. The research method uses normative juridical. The results show that the mechanism carried out by the Governor as the Representative of the Central Government is the supervision of Regency Regional Regulations concerning Regional Taxes and Regional Retributions according to Act No. 23 of 2014 which prioritizes the evaluation aspects of the draft District/City Regional Regulations concerning Regional Taxes and Regional Levies before obtaining approval .
This study aims to determine the effect of Inflation, Exchange Rate and Composite Stock Price Ind... more This study aims to determine the effect of Inflation, Exchange Rate and Composite Stock Price Index (IHSG) to Return of PT Nikko Securities Indonesia Stock Fund period 2014-2017. The study used secondary data obtained through documentation in the form of PT Nikko Securities Indonesia Monthly Net Asset (NAB) report. Data analysis is used with quantitative analysis, multiple linear regression analysis using eviews 9. Population and sample in this research are PT Nikko Securities Indonesia. The result of multiple linear regression analysis was the coefficient of determination (R2) showed the result of 0.123819 or 12%. This means that the Inflation, Exchange Rate and Composite Stock Price Index (IHSG) variables can influence the return of PT Nikko Securities Indonesia's equity fund of 12% and 88% is influenced by other variables. Based on the result of the research, the variables of inflation and exchange rate have a negative and significant effect toward the return of PT Nikko Secu...
Masalah dalam penelitian ini adalah pembinaan yang tidak berjalan dengan baik dan penurunan prest... more Masalah dalam penelitian ini adalah pembinaan yang tidak berjalan dengan baik dan penurunan prestasi olahraga atlet sepaktbolaclub SSB Bintang Salju Kecamatan Matur Kabupaten Agam. Salah satu upaya untuk meningkatkan kembali prestasi club SSB Bintang Salju dalam menghasilkan atlet berprestasi adalah dengan melakukan proses pembinaan yang berkualitas dan tepat yang dilakukan oleh orang yang memiliki potensi di bidangnya. Metode penelitian adalah penelitian kualitatif. Metode pengumpulan data yang digunakan adalah observasi, wawancara dan dokumentasi. Informan dalam penelitian ini meliputi pengurus, pelatih, dan atlet. Teknik analisis data yang digunakan adalah teknik analisiskualitatif yang mencakup tiga kegiatan bersamaan yaitu Reduksi data, penyajian data dan menarik kesimpulan. Berdasarkan hasil penelitian maka dapat disimpulkan bahwa pembinaan cabang olahraga sepakbolaclub SSB Bintang Salju Kecamatan Matur, Kabupaten Agamn dikategorikan belum baik, ini dilihat dari dua indikator ...
Salah satu diagnosa medis di keperawatan jiwa adalah Skizofrenia. Skizofrenia dapat menyebabkan t... more Salah satu diagnosa medis di keperawatan jiwa adalah Skizofrenia. Skizofrenia dapat menyebabkan terjadinya masalah keperawatan halusinasi. Angka kejadian halusinasi meningkat dari tahun ke tahun. Masalah keperawatn halusinasi jika tidak dilakukan intervensi akan menyebabkan resiko tinggi menciderai diri sendiri, orang lain, dan lingkungan. Prevelensi penderita Skizofrenia di Liponsos Keputih Surabaya adalah 80% dari 1.040 jiwa. Salah satu tindakan keperawatan yang dapat dilakukan untuk mengontrol halusinasi adalah melakukan penerapan terapi musik klasik. Tujuan dari penelitian ini adalah melaksanakan asuhan keperawatan klien dengan gangguan persepsi sensori halusinasi pendengaran pada penderita skizofrenia di Liponsos Keputih Surabaya. Metode yang digunakan adalah studi kasus dengan melakukan asuhan keperawatan meliputi pengkajian, diagnosa, intervensi, implementasi, dan evaluasi dengan memfokuskan intervensi pada penerapan terapi musik klasik. Hasil penelitian kepada 2 klien halusi...
Penyelamatan korban-korban pasca bencana selalu bertarung terhadap waktu. Banyaknya korbanyang ti... more Penyelamatan korban-korban pasca bencana selalu bertarung terhadap waktu. Banyaknya korbanyang tidak tertolong berkaitan dengan terlambatnya regu penolong untuk menemukan korban-korbankarena medan yang sulit diprediksi, dijangkau, kurangnya teknologi, dan luasnya area bencana.Teknologi terbaru dalam bidang kebencanaan sangat dibutuhkan. Melalui Program KreativitasMahasiswa Karsa Cipta ini dikembangkan sebuah robot terbang yang mampu mendeteksi korban danmengirimkan obat diberi nama ARTERY, kemampuan dari robot ARTERY dalam mendeteksikeberadaan korban yaitu dengan memanfaatkan algoritma deteksi baru yang canggih disebut denganalgoritma Deep Learning, dimana akan mempelajari fitur fitur dan bentuk dari korban pasca bencana,fitur lain dari robot ARTERY adalah mampu mengirimkan bantuan logistik berupa obat-obatan, agarsecara cepat memberikan pertolongan pada korban pasca bencana. Secara keseluruhan robot terbangARTERY dilengkapi dengan sebuah smartphone yang bertugas melakukan komputasi...
The purpose of research is to analyse the effects of investment knowledge, capital market trainin... more The purpose of research is to analyse the effects of investment knowledge, capital market training, minimum investment capital and risk perception on student investment interest in capital market (study at PT Phintraco Sekuritas Branch Office Semarang). The design of this study is a causally applied quantitative research. The data used are primary data and secondary data. Method of collecting data used questioner. The sampling technique used was purposive sampling, and the amount of the sample are 98 respondents. The test of the instruments was analysed by using validity test and realibility test. Data analysis method used is Multiple Linear Regression Analysis. The result of t test showed that investment knowledge and risk perception had no effect toward student investment interest. Capital market training and minimum investment capital had an effect toward student investment interest. Investment knowledge, capital market training, minimum investment capital and risk perception sim...
The Journal of Management Theory and Practice (JMTP), 2021
This study aims to determine whether conventional money market mutual funds perform better than s... more This study aims to determine whether conventional money market mutual funds perform better than sharia money market mutual funds or vice versa during the COVID-19 pandemic in Indonesia. This research method is descriptive with a quantitative comparison approach. This study employed secondary data obtained from IDX, Indonesian Bank, and Pasar Dana website. The research employed the money market mutual funds data, Net Asset Value, BI 7 Days Repo rate during year 2020. Sharpe ratio utilized in this research to determine the money market mutual funds performance. Then, the result compared by using Independent sample T-test on SPSS. The result uncovers that in general the performance of conventional money market mutual funds performance superior the sharia money market mutual funds performance during covid-19 in Indonesia. However, both mutual funds average Sharpe ratio show the negative number during 2020. Moreover, there are no significant difference between conventional and sharia mo...
This study reveals a decreased ROE performance, and this contradicts the Return On Equity (ROE) t... more This study reveals a decreased ROE performance, and this contradicts the Return On Equity (ROE) theory which states that a good ROE is an increase over time. This study aims to analyze the effect of Debt to Equity Ratio (DER), Current Ratio (CR), Inventory Turnover (ITO), and Sales Growth (SG) towards ROE. The study design was quantitative research applied causal. The research sample used the purposive sampling method, the sample in this study were 9 Manufacturer Companies listed on the Indonesia Stock Exchange in 5 years. The analysis in this study is a panel linear multiple regression analysis models using Eviews 9.0. The analysis results in an Adjusted R2 value of 0,488777, indicating that changes in the independent variables can contribute 48,8777% to changes in the dependent variable. In comparison, 51,1223% are influenced by another factor not included in the model. The t-test results show that the variable CR and ITO have a significant effect on ROE, while the DER and SG have...
JSHP : Jurnal Sosial Humaniora dan Pendidikan, 2019
This study aims to examine the significance of the effects of Economic Value Added, Debt to Equit... more This study aims to examine the significance of the effects of Economic Value Added, Debt to Equity Ratio, Return on Assets, and Current Ratio To stock againts returns in mining sector companies listed in Indonesia Stock Exchange 2013-2017. This study uses secondary data. The samples in this research are determined by purposive sampling technique. The samples used in this research are 6 (six) mining companies listed on Indonesia Stock Exchange. Testing hypothesis by using regression tool of panel data supported by software eviews 9. Results of F test of this research show that Economic Value Added (EVA), Debt to Equity Ratio (DER), Return on Asset (ROA), simultaneously have a significant effect against stock returns on the company. The result of t test shows that the Economic Value Added partially does not have a significant effect on stock return, while the Debt to Equity Ratio, Return on Asset, and Current Ratio have significant effect to stock return on mining companies listed i...
ABSTRACT: The repetitive use of herbicides with the same mechanism of action causes the selection... more ABSTRACT: The repetitive use of herbicides with the same mechanism of action causes the selection of resistant weeds, such as ryegrass. Considering the occurrence of ryegrass (Lolium multiflorum) in eucalyptus, a crop on which glyphosate is used, it is necessary to study its interference. The objective of this study was to evaluate the effect of densities (0, 10, 20, 30 and 50 plants m-2) of two ryegrass biotypes (resistant and susceptible to glyphosate) on seedlings of two eucalyptus clones (I-144 and 1407). The used experimental design was in randomized blocks with four replications, following a 2 x 5 factorial arrangement for each clone. The height and diameter of the clones were evaluated at 0, 14, 28, 42, 56 and 70 days after transplantation (DAT), and at 70 DAT, the leaf area and dry biomass of eucalyptus and ryegrass were also evaluated. There was no interaction between the biotype and densities factors for the clones, but all characteristics were affected by the factors sepa...
Weeds reduce crop yields, and among the methods used to control these plants, chemical use is pre... more Weeds reduce crop yields, and among the methods used to control these plants, chemical use is preferred. However, the repeated application of herbicides with the same mechanism of action selects for resistant populations. The aim of this study was to evaluate glyphosate resistance in Lolium multiflorum (Lam.) and relate the resistance to protein expression in the absence and presence of the herbicide using a metabolic-proteomic approach. Glyphosate resistance was confirmed, with a sevenfold difference in resistance between susceptible and resistant genotypes. Among the possible mechanisms affecting resistance, mutations in the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), herbicide differential translocation and overexpression of EPSPS are suggested. Susceptible plants had higher growth than did resistant plants in the absence of the herbicide, in addition to greater expression of protein groups related to photosynthesis and to tolerance to biotic and abiotic stresses....
This research was carried out to evaluate the interference periods and phytosociological indexes ... more This research was carried out to evaluate the interference periods and phytosociological indexes of the weed community on sweet sorghum, hybrid CVSW 80007, cultivated for two seasons in a year. The treatments were based on an increased duration of weed presence and weed absence after sowing (0, 4, 7, 14, 21, 28, 35, 42, 56 and 68 days after crop emergence for the summer season and 0, 4, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 100 days for the fall season). The weed community was evaluated based on the number of weeds and the dry mass of each weed population in each period of weed control in the summer season and each period of no weed control and weed control in the autumn season. These data were used to determine the relative indexes of density, dominance and importance, and the weed community indexes of diversity and equitability. The main weeds comprising the community were Cyperus rotundus, Alternanthera tenella, Indigofera hirsuta, Amaranthus sp., Digitaria nuda, and Portulaca ol...
TENCON 2021 - 2021 IEEE Region 10 Conference (TENCON)
Currently, much medical personnel died because of being infected by COVID-19 and because of low p... more Currently, much medical personnel died because of being infected by COVID-19 and because of low personal protective facilities and the duties of medical personnel that must carry out to deliver the logistics to patients and make many contacts between the medical personnel and patients of COVID-19. Mobile robots are considered the right solution to complete this problem. With mobile robots, hospitals or the place of isolation can minimize contact between medical personnel and patients of COVID-19 by carrying out the logistic delivery task. To deliver the logistic, a mobile robot must have low-level control, and the mechanism to carry out the workpiece also have the mechanism to open the door. The mechanism to carry out the workpiece is a system to pick up and place the rack of logistics from one place to another. In this study, the low-level control was applied using a PID control with the parameter's value $\boldsymbol{k}_{\boldsymbol{p}}=500,\boldsymbol{t}_{\boldsymbol{i}}=0.001$, and $\boldsymbol{t}_{\boldsymbol{d}}=0.001$ and teleoperation to control the mobile robot manually, so the mobile robot was able to move and carry out the load with the maximum value is 13 kg also open the door. Based on the results of the tests that have been carried out, the mobile robot with the proposed low-level control and the object management system can do the delivery task to reduce contact between medical personnel and patients of COVID-19, also the mobile robot can be controlled manually.
The era of digitalization is underway in Indonesia. One of the influential aspects is the busines... more The era of digitalization is underway in Indonesia. One of the influential aspects is the business environment. In the business world, economic transaction are vital in developing a cashless society. The purposed of the study to assess the socio demographic variables (gender, marital status, education level, occupation dan income) correlate of the payments preferences. The sampling method was purposive sampling. An online survey of 100 participants was conducted among a sample of people who aged 20 years and over and have used e-money for three months. The survey included two parts: first, socio demographic characteristics and second the preferency of payments. Cross tabulation and Chi Squared test were used. The results showed that the majority participans was under 40 years old and have more one instruments of e-money. E-money used for on line shopping, transportation and to pay the bills. The conclution of the study there was no significant correlation between the preference of...
This study aims to discuss and analyze the role of the Governor as the Representative of the Cent... more This study aims to discuss and analyze the role of the Governor as the Representative of the Central Government in the supervision of Regional Regulations on Regional Taxes and Levies in accordance with Act No. 23 of 2014 concerning Regional Government. The research method uses normative juridical. The results show that the mechanism carried out by the Governor as the Representative of the Central Government is the supervision of Regency Regional Regulations concerning Regional Taxes and Regional Retributions according to Act No. 23 of 2014 which prioritizes the evaluation aspects of the draft District/City Regional Regulations concerning Regional Taxes and Regional Levies before obtaining approval .
This study aims to determine the effect of Inflation, Exchange Rate and Composite Stock Price Ind... more This study aims to determine the effect of Inflation, Exchange Rate and Composite Stock Price Index (IHSG) to Return of PT Nikko Securities Indonesia Stock Fund period 2014-2017. The study used secondary data obtained through documentation in the form of PT Nikko Securities Indonesia Monthly Net Asset (NAB) report. Data analysis is used with quantitative analysis, multiple linear regression analysis using eviews 9. Population and sample in this research are PT Nikko Securities Indonesia. The result of multiple linear regression analysis was the coefficient of determination (R2) showed the result of 0.123819 or 12%. This means that the Inflation, Exchange Rate and Composite Stock Price Index (IHSG) variables can influence the return of PT Nikko Securities Indonesia's equity fund of 12% and 88% is influenced by other variables. Based on the result of the research, the variables of inflation and exchange rate have a negative and significant effect toward the return of PT Nikko Secu...
Masalah dalam penelitian ini adalah pembinaan yang tidak berjalan dengan baik dan penurunan prest... more Masalah dalam penelitian ini adalah pembinaan yang tidak berjalan dengan baik dan penurunan prestasi olahraga atlet sepaktbolaclub SSB Bintang Salju Kecamatan Matur Kabupaten Agam. Salah satu upaya untuk meningkatkan kembali prestasi club SSB Bintang Salju dalam menghasilkan atlet berprestasi adalah dengan melakukan proses pembinaan yang berkualitas dan tepat yang dilakukan oleh orang yang memiliki potensi di bidangnya. Metode penelitian adalah penelitian kualitatif. Metode pengumpulan data yang digunakan adalah observasi, wawancara dan dokumentasi. Informan dalam penelitian ini meliputi pengurus, pelatih, dan atlet. Teknik analisis data yang digunakan adalah teknik analisiskualitatif yang mencakup tiga kegiatan bersamaan yaitu Reduksi data, penyajian data dan menarik kesimpulan. Berdasarkan hasil penelitian maka dapat disimpulkan bahwa pembinaan cabang olahraga sepakbolaclub SSB Bintang Salju Kecamatan Matur, Kabupaten Agamn dikategorikan belum baik, ini dilihat dari dua indikator ...
Salah satu diagnosa medis di keperawatan jiwa adalah Skizofrenia. Skizofrenia dapat menyebabkan t... more Salah satu diagnosa medis di keperawatan jiwa adalah Skizofrenia. Skizofrenia dapat menyebabkan terjadinya masalah keperawatan halusinasi. Angka kejadian halusinasi meningkat dari tahun ke tahun. Masalah keperawatn halusinasi jika tidak dilakukan intervensi akan menyebabkan resiko tinggi menciderai diri sendiri, orang lain, dan lingkungan. Prevelensi penderita Skizofrenia di Liponsos Keputih Surabaya adalah 80% dari 1.040 jiwa. Salah satu tindakan keperawatan yang dapat dilakukan untuk mengontrol halusinasi adalah melakukan penerapan terapi musik klasik. Tujuan dari penelitian ini adalah melaksanakan asuhan keperawatan klien dengan gangguan persepsi sensori halusinasi pendengaran pada penderita skizofrenia di Liponsos Keputih Surabaya. Metode yang digunakan adalah studi kasus dengan melakukan asuhan keperawatan meliputi pengkajian, diagnosa, intervensi, implementasi, dan evaluasi dengan memfokuskan intervensi pada penerapan terapi musik klasik. Hasil penelitian kepada 2 klien halusi...
Penyelamatan korban-korban pasca bencana selalu bertarung terhadap waktu. Banyaknya korbanyang ti... more Penyelamatan korban-korban pasca bencana selalu bertarung terhadap waktu. Banyaknya korbanyang tidak tertolong berkaitan dengan terlambatnya regu penolong untuk menemukan korban-korbankarena medan yang sulit diprediksi, dijangkau, kurangnya teknologi, dan luasnya area bencana.Teknologi terbaru dalam bidang kebencanaan sangat dibutuhkan. Melalui Program KreativitasMahasiswa Karsa Cipta ini dikembangkan sebuah robot terbang yang mampu mendeteksi korban danmengirimkan obat diberi nama ARTERY, kemampuan dari robot ARTERY dalam mendeteksikeberadaan korban yaitu dengan memanfaatkan algoritma deteksi baru yang canggih disebut denganalgoritma Deep Learning, dimana akan mempelajari fitur fitur dan bentuk dari korban pasca bencana,fitur lain dari robot ARTERY adalah mampu mengirimkan bantuan logistik berupa obat-obatan, agarsecara cepat memberikan pertolongan pada korban pasca bencana. Secara keseluruhan robot terbangARTERY dilengkapi dengan sebuah smartphone yang bertugas melakukan komputasi...
The purpose of research is to analyse the effects of investment knowledge, capital market trainin... more The purpose of research is to analyse the effects of investment knowledge, capital market training, minimum investment capital and risk perception on student investment interest in capital market (study at PT Phintraco Sekuritas Branch Office Semarang). The design of this study is a causally applied quantitative research. The data used are primary data and secondary data. Method of collecting data used questioner. The sampling technique used was purposive sampling, and the amount of the sample are 98 respondents. The test of the instruments was analysed by using validity test and realibility test. Data analysis method used is Multiple Linear Regression Analysis. The result of t test showed that investment knowledge and risk perception had no effect toward student investment interest. Capital market training and minimum investment capital had an effect toward student investment interest. Investment knowledge, capital market training, minimum investment capital and risk perception sim...
The Journal of Management Theory and Practice (JMTP), 2021
This study aims to determine whether conventional money market mutual funds perform better than s... more This study aims to determine whether conventional money market mutual funds perform better than sharia money market mutual funds or vice versa during the COVID-19 pandemic in Indonesia. This research method is descriptive with a quantitative comparison approach. This study employed secondary data obtained from IDX, Indonesian Bank, and Pasar Dana website. The research employed the money market mutual funds data, Net Asset Value, BI 7 Days Repo rate during year 2020. Sharpe ratio utilized in this research to determine the money market mutual funds performance. Then, the result compared by using Independent sample T-test on SPSS. The result uncovers that in general the performance of conventional money market mutual funds performance superior the sharia money market mutual funds performance during covid-19 in Indonesia. However, both mutual funds average Sharpe ratio show the negative number during 2020. Moreover, there are no significant difference between conventional and sharia mo...
This study reveals a decreased ROE performance, and this contradicts the Return On Equity (ROE) t... more This study reveals a decreased ROE performance, and this contradicts the Return On Equity (ROE) theory which states that a good ROE is an increase over time. This study aims to analyze the effect of Debt to Equity Ratio (DER), Current Ratio (CR), Inventory Turnover (ITO), and Sales Growth (SG) towards ROE. The study design was quantitative research applied causal. The research sample used the purposive sampling method, the sample in this study were 9 Manufacturer Companies listed on the Indonesia Stock Exchange in 5 years. The analysis in this study is a panel linear multiple regression analysis models using Eviews 9.0. The analysis results in an Adjusted R2 value of 0,488777, indicating that changes in the independent variables can contribute 48,8777% to changes in the dependent variable. In comparison, 51,1223% are influenced by another factor not included in the model. The t-test results show that the variable CR and ITO have a significant effect on ROE, while the DER and SG have...
JSHP : Jurnal Sosial Humaniora dan Pendidikan, 2019
This study aims to examine the significance of the effects of Economic Value Added, Debt to Equit... more This study aims to examine the significance of the effects of Economic Value Added, Debt to Equity Ratio, Return on Assets, and Current Ratio To stock againts returns in mining sector companies listed in Indonesia Stock Exchange 2013-2017. This study uses secondary data. The samples in this research are determined by purposive sampling technique. The samples used in this research are 6 (six) mining companies listed on Indonesia Stock Exchange. Testing hypothesis by using regression tool of panel data supported by software eviews 9. Results of F test of this research show that Economic Value Added (EVA), Debt to Equity Ratio (DER), Return on Asset (ROA), simultaneously have a significant effect against stock returns on the company. The result of t test shows that the Economic Value Added partially does not have a significant effect on stock return, while the Debt to Equity Ratio, Return on Asset, and Current Ratio have significant effect to stock return on mining companies listed i...
ABSTRACT: The repetitive use of herbicides with the same mechanism of action causes the selection... more ABSTRACT: The repetitive use of herbicides with the same mechanism of action causes the selection of resistant weeds, such as ryegrass. Considering the occurrence of ryegrass (Lolium multiflorum) in eucalyptus, a crop on which glyphosate is used, it is necessary to study its interference. The objective of this study was to evaluate the effect of densities (0, 10, 20, 30 and 50 plants m-2) of two ryegrass biotypes (resistant and susceptible to glyphosate) on seedlings of two eucalyptus clones (I-144 and 1407). The used experimental design was in randomized blocks with four replications, following a 2 x 5 factorial arrangement for each clone. The height and diameter of the clones were evaluated at 0, 14, 28, 42, 56 and 70 days after transplantation (DAT), and at 70 DAT, the leaf area and dry biomass of eucalyptus and ryegrass were also evaluated. There was no interaction between the biotype and densities factors for the clones, but all characteristics were affected by the factors sepa...
Weeds reduce crop yields, and among the methods used to control these plants, chemical use is pre... more Weeds reduce crop yields, and among the methods used to control these plants, chemical use is preferred. However, the repeated application of herbicides with the same mechanism of action selects for resistant populations. The aim of this study was to evaluate glyphosate resistance in Lolium multiflorum (Lam.) and relate the resistance to protein expression in the absence and presence of the herbicide using a metabolic-proteomic approach. Glyphosate resistance was confirmed, with a sevenfold difference in resistance between susceptible and resistant genotypes. Among the possible mechanisms affecting resistance, mutations in the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), herbicide differential translocation and overexpression of EPSPS are suggested. Susceptible plants had higher growth than did resistant plants in the absence of the herbicide, in addition to greater expression of protein groups related to photosynthesis and to tolerance to biotic and abiotic stresses....
This research was carried out to evaluate the interference periods and phytosociological indexes ... more This research was carried out to evaluate the interference periods and phytosociological indexes of the weed community on sweet sorghum, hybrid CVSW 80007, cultivated for two seasons in a year. The treatments were based on an increased duration of weed presence and weed absence after sowing (0, 4, 7, 14, 21, 28, 35, 42, 56 and 68 days after crop emergence for the summer season and 0, 4, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 100 days for the fall season). The weed community was evaluated based on the number of weeds and the dry mass of each weed population in each period of weed control in the summer season and each period of no weed control and weed control in the autumn season. These data were used to determine the relative indexes of density, dominance and importance, and the weed community indexes of diversity and equitability. The main weeds comprising the community were Cyperus rotundus, Alternanthera tenella, Indigofera hirsuta, Amaranthus sp., Digitaria nuda, and Portulaca ol...
Uploads
Papers by Muhammad Rois