Frequency and risk factors of musculoskeletal disorders in high risk occupation workers in Urban, Karachi.

OBJECTIVE: To determine the frequency and risk factors of musculoskeletal disorders in high-risk occupation workers in an urban setting. METHODS: The analytical cross-sectional study was conducted in Karachi from July to December 2020, and comprised office workers, operation theatre technicians and coolies. The presence of musculoskeletal disorders was assessed using the Nordic Musculoskeletal Questionnaire to determine factors associated with moderate to severe condition. Data was analysed using SPSS 20. RESULTS: Of the 300 male subjects, 100(33.3%) each were office workers, operation theatre technicians and coolies. The overall mean age was 33.25±6.8 years (range: 18-50 years). The overall prevalence of musculoskeletal disorders was 179(59.7%). Besides, 117(65.4%) patients with musculoskeletal disorders had intermediate stage of the disease. The lower back and neck were the most common site of trouble involved in preceding 12 months 111(43.6%) each. CONCLUSIONS: Prevalence of musculoskeletal disorders was found to be a common problem affecting high-risk occupational workers.

Environmental implications of petroleum spillages in the Niger Delta region of Nigeria: A review.

The issue of environmental pollution has been recognized as a typical example of an anthropogenic activity that constitutes a global challenge coupled with the influence of climate change. This has constituted several hazards which include bioaccumulation of toxic substances, pollution of the aquatic environment, and high rate of dilapidation of soil structure and texture, health hazards, high level of imbalance in the ecosystem and a high level of toxicity in humans and the environment. Despite the intervention of governments, industries, researchers and relevant stakeholders, these problems remain paramount in most regions. Therefore, given the aforementioned, it is essential to identify sustainable remediation techniques, innovative knowledge on remediation strategies and clean up techniques that could help in the mitigation of all these highlighted challenges. Moreover, several studies have revealed the deleterious influence of petroleum or oil spillages resulting in irreparable environmental dilapidation and other potential hazards to human health, agriculture, climate system, and the ecosystem in general. From the systematic analysis of the evidence-based, meta-data-based review and other reviewed literature, it is noticeable that there is scant holistic review study that will incorporate all these aforementioned environmental implications resulting from the activities of petroleum resources in the Niger Delta region of Nigeria (NDRN) in just a single study. In the interim, it is alleged that there is hardly a permanent and tangible solution to these petroleum spillage issues and their impacts on the region; albeit, awareness will be fundamental for its mitigation. Hence, this review study will attempt to fill this gap by holistically reviewing the selected environmental implications of petroleum spillages in the NDRN drawn from 219 evidence and meta-data-based reviews and other articles. Furthermore, the relevant legal frameworks that could guild in protecting against environmental issues and petroleum spillages, are discussed in this study. In conclusion, the study cautiously provides a way forward by submitting that effective research and development measures ranging from public health assessments of petroleum contamination to an all-embracing application of bioremediation technology should frequently be carried out as a matter of urgency with resilient adaptation, mollification and management of these menaces.

[Effects of Mulching and Slow-release Fertilizer Application Reduction on Soil Microbial Community Structure in Rapeseed Field Under Two Different Rainfall Conditions].

In order to investigate the effects of furrow and ridge rainwater harvesting, straw mulching, and reduced and slow-release fertilizer on soil microbial community structure of rapeseed, a two-year field study was conducted in rainy (2016-2017) and drought (2017-2018) seasons, which included three cultivation patterns:1 conventional flat planting, 2 straw mulching, and 3 ridge-furrow rainfall harvesting system and four fertilization patterns:1 conventional fertilization (100% of the amount), 2 reduced slow-release fertilizer Ⅰ (80% of the amount), 3 reduced slow-release fertilizer Ⅱ (60% of the amount), and 4 no fertilizer. The results indicated that it was rainy in 2016-2017, with seasonal drought during the nutritional growth stage in 2017-2018. The two technologies (straw mulching+80% slow-release fertilizer, J80 and ridge-furrow rainfall harvesting system+80% slow-release fertilizer, M80) were beneficial to boost the soil microbial activity. J80 and M80 increased the microbial biomass carbon by 9.94% and 10.32% and microbial biomass nitrogen by 2.38% and 1.19%, respectively, compared with that of the local cultivation pattern under two different climate conditions. The total amount of microbial phospholipid fatty acid (PLFA) decreased by 30.75% in the rainy year compared with that in the drought year, and mulching technology could effectively increase the total amount of soil PLFA. The PLFA contents of soil bacteria and fungi in the rainy year were 33.67% and 53.21%, respectively, lower than those in the drought year. However, the PLFA content of actinomycetes increased by 13.04%. Microbial communities were sensitive to abnormal precipitation. The bacteria/fungi ratio increased in rainy weather. The drought climate heighted the ratio of straight chain saturated fatty acid/straight chain monounsaturated fatty acid and straight chain monounsaturated fatty acid/cyclopropane acid. In conclusion, adopting the optimal cultivation technologies can stabilize the soil microenvironment under abnormal precipitation, relieve water and nutrient stress, and provide an effective means for rapeseed sustainable development.