scholarly journals Rock Burst Control and Prevention in Mufulira Mine

2021 ◽  
Vol 11 (1) ◽  
pp. 125-132
Author(s):  
Chikoye Sikazwe Taizya et al., Chikoye Sikazwe Taizya et al., ◽  
Keyword(s):  
Rock Burst ◽  
Control And Prevention

scholarly journals Experimental Study of Prevention and Control of Rock Burst in Steeply Inclined Coal Seams by Mining Sequence and Filling

2022 ◽  
Vol 2022 ◽  
pp. 1-10
Author(s):  
Zhihui Zhang ◽  
Yangyi Liu ◽  
Wenwen Zhu ◽  
Jian Liu ◽  
Tian Ma ◽  
...  
Keyword(s):  
Stress Concentration ◽  
Coal Seam ◽  
Rock Burst ◽  
Vertical Direction ◽  
Geological Structure ◽  
Coal Seams ◽  
Rock Pillar ◽  
Fundamental Information ◽  
Mining Sequence ◽  
Control And Prevention

The control and prevention of rock burst in a steeply inclined coal seam are essential. In order to figure out the effects of filling and mining sequence on rock burst in the steeply inclined coal seam, B3+6 and B1+2 coal seams in Wudong coal mine are chosen as the research objects, and an in-house experiment system of similarity simulation is established in this study. Combined with numerical simulation, the characteristics of collapse, stress distribution, and displacement variations can be measured, which provide useful information to study the effects of the filling body and mining sequence on rock burst. Experimental results show that the key reason for rock burst in a steeply inclined coal seam is the stress concentration of the rock pillar between B3+6 and B1+2 coal seams instead of the stress-lever-effect of a deeper rock pillar. The filling body can support the middle rock pillar, share the geological structure stress in the horizontal and vertical direction, eliminate the stress concentration zone largely, and prevent the occurrence of rock burst. When multiple working faces are working, the opposite side of the coal seam should be mined first to release the energy in the rock in advance, thus preventing the rock burst effectively. The research results provide fundamental information for better understanding the reason for rock burst and preventing rock burst in the steeply inclined coal seam.

The Speech-Language Pathologists' Role in Mild Traumatic Brain Injury for Middle and High School–Age Children: Viewpoints on Guidelines From the Centers for Disease Control and Prevention

2019 ◽  
Vol 28 (3) ◽  
pp. 1363-1370 ◽  
Author(s):  
Jessica Brown ◽  
Katy O'Brien ◽  
Kelly Knollman-Porter ◽  
Tracey Wallace
Keyword(s):  
High School ◽  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Disease Control ◽  
Mild Traumatic Brain Injury ◽  
School Age Children ◽  
School Age ◽  
Speech Language Pathologists ◽  
Control And Prevention ◽  
Centers For Disease Control

Purpose The Centers for Disease Control and Prevention (CDC) recently released guidelines for rehabilitation professionals regarding the care of children with mild traumatic brain injury (mTBI). Given that mTBI impacts millions of children each year and can be particularly detrimental to children in middle and high school age groups, access to universal recommendations for management of postinjury symptoms is ideal. Method This viewpoint article examines the CDC guidelines and applies these recommendations directly to speech-language pathology practices. In particular, education, assessment, treatment, team management, and ongoing monitoring are discussed. In addition, suggested timelines regarding implementation of services by speech-language pathologists (SLPs) are provided. Specific focus is placed on adolescents (i.e., middle and high school–age children). Results SLPs are critical members of the rehabilitation team working with children with mTBI and should be involved in education, symptom monitoring, and assessment early in the recovery process. SLPs can also provide unique insight into the cognitive and linguistic challenges of these students and can serve to bridge the gap among rehabilitation and school-based professionals, the adolescent with brain injury, and their parents. Conclusion The guidelines provided by the CDC, along with evidence from the field of speech pathology, can guide SLPs to advocate for involvement in the care of adolescents with mTBI. More research is needed to enhance the evidence base for direct assessment and treatment with this population; however, SLPs can use their extensive knowledge and experience working with individuals with traumatic brain injury as a starting point for post-mTBI care.

TINGKAT PENGETAHUAN MAHASISWA KEPANITERAAN KLINIK TENTANG STANDARD PRECAUTIONS PADA PASIEN SEBELUM DAN SETELAH TINDAKAN PERAWATAN GIGI DI RSGM FKG USU

2016 ◽  
Vol 19 (1) ◽  
pp. 4-11
Author(s):  
Olivia Avriyanti Hanafiah ◽  
Gema Nazri Yanti ◽  
Chintya Faradilla ◽  
Dewi Wulandari
Keyword(s):  
Disease Control ◽  
Standard Precautions ◽  
Control And Prevention ◽  
Centers For Disease Control

Prosedur kontrol infeksi yang umum dilakukan adalah dengan menerapkan standard precautions berdasarkan peraturan yang dikeluarkan oleh Centers for Disease Control and Prevention (CDC). Tujuan penelitian ini adalah untuk mengetahui tingkat pengetahuan mahasiswa kepaniteraan klinik tentang standard precautions operator sebelum dan setelah perawatan gigi. Penelitian ini merupakan penelitian survei deskriptif yang dilakukan dengan cara membagikan kuesioner pada mahasiswa kepaniteraan klinik yang terdiri atas 26 pertanyaan untuk sebelum dan 32 pertanyaan untuk setelah tindakan perawatan gigi. Data diolah secara manual dan dianalisis dengan analisis univariat. Hasil penelitian pengetahuan responden tentang standard precautions sebelum tindakan perawatan yang berpengetahuan kurang 69,8%, 29,3% cukup, 1% responden yang berpengetahuan baik. Setelah perawatan gigi didapat 54,5% responden memiliki pengetahuan cukup, 37,5% berpengetahuan baik, dan hanya 8% responden berpengetahuan kurang. Sebagai kesimpulan,  pengetahuan mahasiswa kepaniteraan klinik tentang standard precautions operator sebelum dan setelah perawatan gigi masih kurang.

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