Para-Phenylenediamine (PPD) in commercially available Henna preparations in Bangladesh

In Bangladesh Henna is one of the most popular cosmetic products. The leaves of Henna are dried to make powder on which oil or water is mixed to get a paste to stain the body or hair. Although the occurance of contact allergic dermatitis in natural Henna is not so common, but this risk is increased by adding para-Phenylenediamine (PPD), which is used to make the Henna color dark to deep black. According to Scientific Committee on Consumer Products (SCCP), para-Phenylenediamine (PPD) is treated as an allergen and is considered as a very strong potential skin sensitizer. The presence of PPD in the commercially used tube Henna increases the risk of allergic contact dermatitis and several cases have already been reported worldwide. For this study, about 10 Henna samples were randomly collected from 10 selected areas of Dhaka city. The presence of PPD in Henna samples was determined by using High Performance Liquid Chromatography (HPLC). The result showed the presence of PPD in all of the Henna samples at substantial concentrations, ranging between 79.12-204.77 mg/kg where the average range is 142.36 mg/kg, which is much higher than the permissible levels (<2% or 0.1 mg/m3). The finding suggests that there should be a regulation and monitoring condition for the production and distribution of these adulterated Henna products in Bangladesh. Bioresearch Commu. 8(1): 1088-1092, 2022 (January)

Some Physicochemical Properties of Soils from Three Steel Welding and Fabrication Workshops in Port Harcourt, Rivers State, Nigeria

Some physicochemical properties were assessed in soils within steel welding and fabrication workshops in Port Harcourt, Rivers State, Nigeria. The study was carried out between May to November, 2020. The physicochemical parameters were determined using standard conventional methods of analysis to ascertain the different levels of the selected physicochemical parameters in the studied environment. The results obtained within the months revealed that pH average range was between 6.8±0.08-7.1±0.05, the electrical conductivity average range was between 65.25±0.83-76±0.71µs/cm, percentage organic carbon was within average range of 0.396±0.001-0.525±0.001%, percentage soil organic matter was in the average range of 0.682±0.002-0.904±0.002% and for particle size analysis, percentage sand was in the average range of 75±0.71-79±0.71%, percentage clay was in the average range 9.25±0.83-11±0.71% and percentage silt was in the average range 10.75±0.43-14±0.71% for the Egbelu, Elioparanwo and Saint John soils respectively. Observation from the nature of occurrence of the physicochemical parameters in the steel-welding and fabrication workshops showed that that the steel-welding and fabrication has not yet influenced the level of the physicochemical parameters in the soils studied.

Computer Simulation Design of Electric Vehicle Dynamic Performance

New energy vehicles are mainly pure electric new energy vehicles. Pure electric vehicles are powered entirely by batteries, as well as power generators. With the improvement of economic level, scientific and technological progress, as well as the emphasis on energy conservation and emission reduction, the development of pure electric vehicles is more rapid, computer simulation design technology helps to adjust and optimize the dynamic performance of electric vehicles, in 2019, the output of pure electric vehicles reached 56,700, it is expected to reach about 100,000 by 2022. However, due to the limitation of battery technology, the average range of pure electric vehicles is about 200km. So it can only withstand short distances between cities.

Analysis of the effect of CO and PM 2.5 parameters on vegetation conditions in red brick industrial area, Srimulyo Village, Sragen Regency

Red brick industrial activity which is developing in Srimulyo Village generates pros and cons related to CO gas emissions and the resulting particulates, which affect to the flora diversity. This study aims to identify flora biodiversity in the red brick industrial area of Srimulyo Village, then analyze the effect of the emission value of CO and Particulate Matter (PM) 2.5 on vegetation in the area. This study conducted at 4-point locations for sampling, using Shannon-Wiener formula to determine the biodiversity index. Result obtain low vegetation diversity index and low stability with the average index value was 1.91. The low vegetation diversity index has correlation with the measured value of CO and PM 2.5 gases which above the standard thresholds. The average range of CO gas levels is 353.3-844.7 ppm, and PM 2.5 levels is 1928.7-9517.7 µg/m3. In conclusion, this study shows that the CO gases and PM 2.5 resulted from Red Brick Industrial Area affect to the flora diversity index into a low cluster in the observed location.

Effective treatment for secondary angle-closure glaucoma caused by traumatic lens subluxation: phacoemulsification with capsular-tension-ring implantation combined with ophthalmic endoscope-controlled goniosynechialysis

AIM: To investigate the safety and efficacy of phacoemulsification with capsular-tension-ring implantation and posterior chamber intraocular lens implantation combined with ophthalmic endoscope-controlled goniosynechialysis (Phaco-CTR-IOL-OE-GSL) for treating secondary angle-closure glaucoma induced by traumatic lens subluxation. METHODS: A retrospective and descriptive study was performed on patients with lens subluxation, angle closure, goniosynechia, and evaluated intraocular pressure (IOP) that cannot be controlled with medication, who underwent Phaco-CTR-IOL-OE-GSL. The postoperative best-corrected visual acuity (BCVA), IOP, range of goniosynechia and complications were retrospectively observed. RESULTS: Nine patients with secondary angle-closure glaucoma induced by traumatic lens subluxation were included. The follow-up period was 51.1±8.6mo. The preoperative range of zonule rupture was 158.2°±33.0°, and the range of goniosynechia was 220.0°±92.5°. The baseline BCVA was 0.9±1.0 logMAR, IOP was 30.7±17.3 mm Hg, and number of anti-glaucoma medication was 3.2±1.1. Mild intraoperative hyphaemia with 8 eyes (88.8%) in the anterior chamber, and was absorbed two days postoperatively. One eye (11.1%) had postoperative ciliary body detachment and was recovered after five days of topical drug treatment. BCVA was 0.2±0.2 logMAR at 3mo postoperatively. The average IOP at the last follow-up was 16.7±2.0 mm Hg, and no anti-glaucoma medications were used. The average range of recurrent goniosynechia was 54.9°±33° at the final postoperative gonioscopic examination. CONCLUSION: Phaco-CTR-IOL-OE-GSL is safe and effective in the treatment of secondary angle-closure glaucoma induced by traumatic lens subluxation. The use of an endoscope provides a more direct and clear examination for GSL, and 360° dissection is easily achieved.

Kajian sosial ekonomi pada petani garam di wilayah Madura

As one of the islands in Indonesia , Madura is one of the salt-producing centers in Indonesia , thus earning the nickname as the Salt Island. Therefore, almost 80% of the population in Madura have a livelihood as salt farmers and including salt farmers in Bunder Village, Pademawu District, Pamekasan Regency. However, the weak adoption power of Madura salt farmers in Bunder Village, Pademawu District, Pamekasan Regency to the new technology, namely geomembrane, has a very significant socio-economic impact on salt farmers. So the purpose of this study was to examine the socio-economic conditions of Madura salt farmers in Bunder Village, Pademawu District, Pamekasan Regency. Data were collected through primary data (observations and interviews) and secondary data. The data obtained from the results of the study were processed using qualitative analysis (income analysis) and quantitative analysis (range score analysis of BPS welfare indicators in 2015) to ensure the socio-economic conditions of Madura salt farmers in Bunder Village, Pademawu District, Pamekasan Regency. The results showed that (1) The average monthly income of salt farmers was IDR 1,784,416 per hectare per month (2) The average range score of Madura salt farmers based on the BPS welfare indicators in 2020 was in the poor category.

Dissipation and Distribution of Picarbutrazox Residue Following Spraying with an Unmanned Aerial Vehicle on Chinese Cabbage (Brassica campestris var. pekinensis)

We assessed the residual distribution and temporal trend of picarbutrazox sprayed by agricultural multicopters on Chinese cabbage and considered fortification levels and flying speeds. In plot 2, 14 days after the last spraying, the residues decreased by ~91.3% compared with those in the samples on day 0. The residues in the crops decreased by ~40.8% of the initial concentration owing to growth (dilution effect) and by ~50.6% after excluding the dilution effect. As the flight speed increased, picarbutrazox residues decreased (p < 0.05, least significant deviation [LSD]). At 2 m s−1 flight speed, the residual distribution differed from the dilution rate of the spraying solution. The average range of picarbutrazox residues at all sampling points was 0.007 to 0.486, below the limit of quantitation −0.395, 0.005–0.316, and 0.005–0.289 mg kg−1 in plots 1, 2, 3, and 4, respectively, showing significant differences (p < 0.05, LSD). These results indicated that the residual distribution of picarbutrazox sprayed by using a multicopter on the Chinese cabbages was not uniform. However, the residues were less than the maximum residue limit in all plots. Accordingly, picarbutrazox was considered to have a low risk to human health if it was sprayed on cabbage according to the recommended spraying conditions.

Abtadi English Program to Improve the Production of Descriptive Texts in Peruvian Students

The purpose of the research was to determine to what extent the Abtadi strategy and collaborative learning improve the production of descriptive texts in English. It is a study with a quantitative approach, applied type and a quasi-experimental design, it had 82 students as a population, the evaluation instrument was a rubric, for hypothesis testing the Krukal Wallis statistic was used. Likewise, from the results of the hypothesis tests, it was obtained that the average range of the 3 groups are different and whose significance is .000, with p<0.05, it is interpreted that the researcher's hypothesis must be accepted. And consequently, it is inferred that the Abtadi strategy improves the production of descriptive texts in English and in their respective dimensions through G-suite for education, in this context of a global pandemic and remote teaching.

PENGARUH PENAMBAHAN TANAMAN BERUAS LAUT (Scaevola taccada) DALAM PEMBUATAN BIOPLASTIK DARI Kappaphycus alvarezii

The manufacture of bioplastics from kappapycus alvarezii with the addition of extraction of the plant clade, the sea (Scaevola taccada). This study examines the influence of the addition of extracts of the plant clade, the sea and the concentration of carrageenan on physical and mechanical characteristics of bioplastics.The variables studied is the addition of the amount of carrageenan 2 g, 1.5 g, and 1 g with plant extracts clade, sea 0%, 2.5% and 5%. The results obtained from the manufacture of bioplastics to the thickness of the highest in treatment F1, namely 0.393 mm, for all the thickness of the average range 0.0320-0.393 mm. The level of solubility of the most high are in treatment F1 that is 20,92 minutes, for an average of all the solubility range 12.59-20.92 minutes. The rejection and death of the insects was highest in treatment F3, 7% and 3% with the addition of a leaf segmented sea (Scaevola teccada). Thus the addition of the clade, the sea can be said to not meet the Japanesse Industrial Standard (JIS) in the determination of the thickness of the bioplastic that is good that is equal to ≤ 0.25 mm and also for solubility do not meet the SNI to the water resistance of 99%.

EVALUASI REPRODUKSI INDUK SAPI POTONG LIMOSIN DENGAN SISTEM PERKAWINAN INSEMINASI BUATAN (STUDI LAPANG DI KELURAHAN KLAMPOK KECAMATAN SANANWETAN KOTA BLITAR

The aim of this study was to determine reproductive evaluation of Limosin beef cattle by using artificial insemination mating systems located in Klampok Village, Sananwetan District, Blitar City. The results of the study, mean service value per conception (SC) which has a result of 1.55. The mean conception rate (CR) score was 55.5%. The average value of Days Open (DO) has a yield of 123.5 days. The mean value of the Calving Interval (CI) is 372.5 days. The conclusion of this study is the evaluation of the reproduction of Limosin beef cattle using the artificial insemination mating system in Klampok Village, Sananwetan District, Blitar City produces good values ​​including the Value of Service per Conception (S / C), Days Open (DO), Clving Interval (CI) while Conception speed value is still low below the average range.