CP-ABE Access Control Scheme for Sensitive Data Set Constraint with Hidden Access Policy and Constraint Policy

CP-ABE (Ciphertext-Policy Attribute-Based Encryption) with hidden access control policy enables data owners to share their encrypted data using cloud storage with authorized users while keeping the access control policies blinded. However, a mechanism to prevent users from achieving successive access to a data owner’s certain number of data objects, which present a conflict of interest or whose combination thereof is sensitive, has yet to be studied. In this paper, we analyze the underlying relations among these particular data objects, introduce the concept of the sensitive data set constraint, and propose a CP-ABE access control scheme with hidden attributes for the sensitive data set constraint. This scheme incorporates extensible, partially hidden constraint policy. In our scheme, due to the separation of duty principle, the duties of enforcing the access control policy and the constraint policy are divided into two independent entities to enhance security. The hidden constraint policy provides flexibility in that the data owner can partially change the sensitive data set constraint structure after the system has been set up

Oxidation of copper nanotubes embedded in the PET template

Copper oxide based nanostructures possess excellent physical and chemical properties and has many practical applications such as an medicine, sensors, catalysis, solar cell technology and photovoltaic as well as nanoelectronic. Different approaches have been used to synthesize CuO nanostructures: thermal oxidation of copper, hydrothermal route, aqueous reaction, vapor-liquid-solid synthesis, solution-liquid-solid synthesis as well as physical methods such as laser ablation, arc discharge, precursor thermal decomposition, electron beam lithography, and template-assisted synthesis. However, all these methods require high temperatures, complicated equipment or long reaction time

Reduction in use of herbicides by combining aqueous extract of grass pea for weed management and yield of wheat

Nowadays, the increasing costs in the agricultural sector, increasing public concern about the widespread use of herbicides and the development non-chemical methods of weed control programs are alerting management. In this regard, an experiment was conducted to evaluate the effect of aqueous extract of grass pea residues on weed management and crop performance of wheat. The experiment was comprised of three varieties of wheat viz., BARI Gom-30, BARI Gom-31, BARI Gom-32 and six different levels of treatments such as no weeding, recommended dose of herbicide, aqueous extraction of grass pea, 90% recommended dose + aqueous extraction of grass pea,80% recommended dose + aqueous extraction of grass pea, 70% recommended dose +aqueous extraction of grass pea, 60% recommended dose + aqueous extraction of grass pea. The experiment was laid out in a randomized complete block design with three replications. Weed population, weed dry weight and weed control efficacy were significantly influenced by aqueous extract of grass pea crop residues and varieties. The highest numbers of tillers hill-1, numbers of grains spike-1, 1000 grain weight and grain yield were observed where recommended dose of herbicide was used followed by the application of 90% recommended dose +aqueous extraction of grass pea. BARI Gom-31along with 90% recommended dose +aqueous extraction of grass pea produced the highest grain and straw yield among the treatment combination. Therefore, aqueous extract of grass pea crop residues might be used as an alternative way for weed management in effective and sustainable crop production

Assessment of Cognitive Functions in Children with Chronic Renal Failure

ABSTRACT Background: Chronic Kidney disease (CKD) is associated with cognitive impairment. The relation between the degree of cognitive decline and severity of chronic kidney disease (CKD) is less well understood. Objective: assessment of the cognitive functions of children with CKD in comparison to age and sex matched controls as well as in relation to the degree of renal impairment, as determined by the glomerular filtration rate (GFR), subjectively by psychological assessment and objectively by ERP. Methods: In this study 25 neurologically asymptomatic children suffering from CKD of variable severity and duration were enrolled. Besides this, 25 healthy controls were also studied. Glomerular filtration rate (GFR) was estimated using the Schwartz formula. The P300 was studied in all subjects by using standard auditory 'odd-ball' paradigm. Stanford -Binet intelligence scale was performed. Results: We noted a significant prolongation of P300 latencies as severity of CKD increased. Duration of illness, hemoglobin level, and serum electrolytes were not correlated with P300 latency. Conclusion: Increasing severity of CKD is associated with progressive cognitive decline that can be recognized early by monitoring of P300

An economic analysis of Jara and Colombo lemon production in Bangladesh

The study was conducted in two districts namely Sylhet and Narsingdi to investigate the production technology of Jara and Colombolemon growers, estimate profitability and identify the constraints of Jara and Colombolemon. A total sample of 120 farmers taking 60 for Jara lemon from Sylhet and 60 for Colombolemon from Narsingdi was selected randomly for the study. Data were collected through face to face interview method by using structured questionnaire during April–May, 2016. Cost return analysis revealed that Jara and Colombolemon cultivation were profitable in the study areas. Jara lemon cultivation highest cost was estimated Tk. 413575/ha in (11–15)th year garden and lowest cost was Tk. 365777/ha in 2nd year garden. Gross return was highest in 5th year garden (Tk.1995750/ha) and lowest Tk. 975600/ha in (11–15)th year garden. The benefit cost ratio at 6.5% rate of interest was 2.85and IRR 78%. Colombo lemon cultivation highest cost was estimated Tk. 316505/ha in 4th year garden and lowest cost was Tk. 257543/ha in (11–15)th year garden. Gross return was highest Tk. 841522 in 5th year garden and lowest Tk. 413616/ha in (11–15)th year garden. The benefit cost ratio at 6.5% rate of interest was 1.81 and IRR 65%. Lack of improved production technology, poor quality saplings, insect/pest infestation, adulteration of fertilizer and insecticides and less number of export buyers were found major constraints both Jara andColombo lemon production

Improving grain yield and quality by enhancing accumulation of zinc in rice under subtropical condition

One of the primary abiotic factors limiting rice production is zinc (Zn) deficiency. Effective management of Zn in rice soils is crucial, as rice is a staple crop for many nations. To address this issue, a pot trial was conducted at the net house of the Department of Agronomy, Bangladesh Agricultural University, Mymensingh,from December 2019 to May 2020. The trail aimed to assess the impact of zinc on yield performance and grain zinc content of rice. The experiment employed a completely randomized design (CRD) with three replications, involving the applications of six different rates of Zn to three distinct varieties of boro rice. The result revealed that BRRI dhan28 exhibited superior yield and yield-related traits when treated with 12 kg Zn ha-1. Meanwhile, the application of 10 kg Zn ha-1 resulted in the highest Zn content in the grain of BRRI dhan74, considering the quantity of Zn accumulated by the grain. Based on the findings of the study, it can be concluded that applying 12 kg of Zn ha-1 is likely the optimal Zn management strategy to achieve outstanding performance in the rice cultivar BRRI dhan28. Furthermore, applying 10 kg of Zn ha-1 may enhance the Zn content of the grain in BRRI dhan74

Effect of variety and sulphur on yield and yield components of groundnut

Variety and sulphur play a significant role in the physiological growth and yield of crops such as groundnut. Even so, there has been little information on the application of variety and sulphur in groundnut. Therefore, an experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University (BAU), Mymensingh to investigate the effect of sulphur on yield and yield components of two groundnut varieties. The experiment comprised two varieties of groundnut viz. BARI Cheenabadam-8 and Bina cheenabadam-6; and five levels of sulphur viz. 0, 15, 30, 45, and 60 kg ha–1. The experiment was laid out in a randomized complete block design with three replications. Among the parameters leaf area index (2.03), dry matter plant–1 (50.36 g), number of primary branches plant–1 (10.33 cm), number of secondary branches plant–1 (9.27 cm), number of pegs plant–1 (46.27), number of total pods plant–1 (37.80), 100-pods weight (96.82 g), 100- seeds weight (46.25 g), shelling percentage (85.29%), pod yield (3.13 t ha–1), seed yield (2.67 t ha–1), stover yield (6.84 t ha–1), and harvest index (31.37 %) were the highest in BARI Cheenabadam-8, when treated with sulphur 60 kg ha–1. The lowest values of all these parameters were found in Binacheenabadam-6, when no sulphur was applied. This study suggested that BARI Cheenabadam-8 combined with sulphur 60 kg ha–1 could be applied for obtaining the highest yield of groundnut