bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phosphorus minerals in tonstein; coal seam 405 at Sośnica-Makoszowy coal mine, Upper Silesia, southern Poland
Authors: Kokowska-Pawłowska Magdalena , Nowak Jacek 
Published: July 2013

Abstract
Kokowska-Pawłowska, M. and Nowak, J. 2013. Phosphorus minerals in tonstein; coal seam 405 at Sośnica- Makoszowy coal mine, Upper Silesia, southern Poland. Acta Geologica Polonica, 63 (2), 271-281. Warszawa.
The paper presents results of research on tonstein, which constitutes an interburden in coal seam 405 at the Sośnica- Makoszowy coal mine, Makoszowy field (mining level 600 m), Upper Silesia, southern Poland. The mineral and chemical compositions of the tonstein differ from the typical compositions described earlier for tonsteins from Upper Silesia Coal Basin area. Additionally, minerals present in the tonsteins include kaolinite, quartz, kaolinitised biotite and feldspars. The presence of the phosphatic minerals apatite and goyazite has been recognized. The presence of gorceixite and crandallite is also possible. The contents of CaO (5.66 wt%) and P2O5 (6.2 wt%) are remarkably high. Analysis of selected trace elements demonstrated high contents of Sr (4937 ppm) and Ba (4300 ppm), related to the phosphatic minerals. On the basis of mineral composition the tonstein has been identified as a crystalline tonstein, transitional to a multiplied one.
Application of a Radial Turbine 1-D Model
Authors: Žák Zdeněk , Vítek Oldřich , Macek Jan 
Published: July 2013

Shrnutí
Članek, na několika přikladech, popisuje simulace s využitim 1-D modelu radialni turbiny turbodmychadla. Cilem je popsat současny stav a ukazat potencial 1-D přistupu v oblasti modelovani turbodmychadla. Pro možnost testovani modelů turbiny a kompresoru byly vyvinuty rozmanite simulačni nastroje. Model turbinoveho testovaciho stavu umožňuje provozovat turbinu v široke provozni oblasti. Model zkušebniho stavu turbodmychadel se spalovaci komorou je vhodny pro přiřazeni kompresoru turbině. Članek uzaviraji vysledky fungovani modelu turbiny ve spojeni s modelem virtualniho čtyřtaktniho zažehoveho motoru.
Measuring the Yaw Moment of Inertia of a Vehicle
Authors: Hejtmánek Petr , Blaťák Ondřej , Kučera Pavel , Porteš Petr , Vančura Jan 
Published: July 2013

Shrnutí
Članek popisuje postup určeni momentu setrvačnosti vozidla ke svisle ose. Je navržen měřici stav pro měřeni momentu setrvačnosti založeny na principu fyzikalniho kyvadla a je analyzovan vliv chyby měřeni periody kmitu na celkovou chybu určeni momentu setrvačnosti. V programu Labview je sestaven vypočtovy postup pro přesne určeni periody kmitaveho pohybu z naměřenych dat. Funkčnost celeho měřiciho postupu je ověřena stanovenim přesnosti a opakovatelnosti měřeni.
Testing of Modern Vehicles on a 2Wd Roller Test Bench
Authors: Gotfrýd Ondřej , Klír Vojtěch , Drda Jiří 
Published: July 2013

Shrnutí
Pro zkoušeni většiny vozidel s jednou pohaněnou napravou je zakladni provedeni vozidlovych dynamometrů s jednou dvojici valců plně vyhovujici. Problem při měřeni však může nastat v připadě netolerantnosti modernich asistenčnich systemů (ESP, ASR), ktere kvůli neotačejicim se kolům nepohaněne napravy, neumožni rozjezd vozidla. Tato situace je typicka zejmena u vozidel s hybridnim pohonnym ustrojim. Članek popisuje upravu vozidloveho dynamometru s jednou dvojici valců tak, aby bylo možne zajistit otačeni kol nepohaněne napravy simultanně s pohaněnymi koly. Zařizeni bylo uspěšně vyzkoušeno při měřeni automobilu s hybridnim pohonnym ustrojim v paralelnim uspořadani. V textu jsou zaroveň uvedeny některe poznatky ziskane z měřeni.
Effects of nandrolone on recovery after neurotization of chronically denervated muscle in a rat model
Authors: Isaacs Jonathan , Feher Joseph , Shall Mary , Vota Scott , Fox Michael A. , Mallu Satya , Razavi Ashkon , Friebe Ilvy , Shah Sagar , Spita Nathalie 
Published: July 2013

Object
Suboptimal recovery following repair of major peripheral nerves has been partially attributed to denervation atrophy. Administration of anabolic steroids in conjunction with neurotization may improve functional recovery of chronically denervated muscle. The purpose of this study was to evaluate the effect of the administration of nandrolone on muscle recovery following prolonged denervation in a rat model.

Methods
Eight groups of female Sprague-Dawley rats (15 rats per group, 120 in all) were divided into 3- or 6-month denervated hind limb and sham surgery groups and, then, nandrolone treatment groups and sham treatment groups. Evaluation of treatment effects included nerve conduction, force of contraction, comparative morphology, histology (of muscle fibers), protein electrophoresis (for muscle fiber grouping), and immunohistochemical evaluation.

Results
Although a positive trend was noted, neither reinnervated nor normal muscle showed a statistically significant increase in peak muscle force following nandrolone treatment. Indirect measures, including muscle mass (weight and diameter), muscle cell size, muscle fiber type, and satellite cell counts, all failed to support significant anabolic effect.

Conclusions
There does not seem to be a functional benefit from nandrolone treatment following reinnervation of either mild or moderately atrophic muscle (related to prolonged denervation) in a rodent model.
Postoperative ischemic changes after glioma resection identified by diffusion-weighted magnetic resonance imaging and their association with intraoperative motor evoked potentials
Authors: Gempt Jens , Krieg Sandro M. , Hüttinger Stefanie , Buchmann Niels , Ryang Yu-Mi , Shiban Ehab , Meyer Bernhard , Zimmer Claus , Förschler Annette , Ringel Florian 
Published: July 2013

Object
The aim of surgical glioma treatment is the complete resection of tumor tissue while preserving neurological function. Surgery-related neurological deficits arise from direct damage to the cortical or subcortical structures or from ischemia. The authors aimed to assess the incidence of resection-related ischemia of newly diagnosed or recurrent supratentorial gliomas and the sensitivity of intraoperative neuromonitoring (IOM) of motor evoked potentials (MEPs) for detecting such ischemic events and their influence on neurological motor function.

Methods
Between January 2009 and December 2010, 70 patients with tumors in motor-eloquent brain areas underwent intraoperative MEP monitoring during glioma resection and were examined by early postoperative MRI including diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) mapping. Postoperative areas of restricted diffusion were assessed by investigators blinded to the course of intraoperative MEPs and the neurological course.

Results
Among the 70 enrolled patients, a MEP amplitude decline below 50% of the baseline level was observed in 21 patients (30%). Sixteen of these patients (76%) had ischemic lesions identified on postoperative MRI scans. Forty-nine patients (70%) showed no decline in MEP amplitude, and only 16 (33%) of these patients harbored ischemic lesions. Moreover, 9 (69%) of 13 patients with a permanent loss of MEP amplitude showed postoperative ischemic lesions. Factors that promoted the occurrence of postoperative infarction were previous radiotherapy and location of the tumor close to the central arteries.

Conclusions
Alterations in the MEP amplitude during tumor resection and postoperative ischemic lesions are associated with postoperative impairment of motor function. Rather than cortical or subcortical structural damage of eloquent brain tissue alone, peri- or postoperative ischemic lesions play a crucial role in the development of surgery-related motor deficits.
Preoperative ultrasound-guided mapping of peripheral nerves
Authors: Gofeld Michael , Bristow Sandee J. , Chiu Sheila , Kliot Michel 
Published: July 2013

Object
Surgical exposure of a peripheral nerve can be technically challenging, making the operation more extensive and time consuming, particularly in the treatment of small nerves with an anatomically variable position. This study describes the application of ultrasound to facilitate surgical access and localization of targeted peripheral nerves.

Methods
A preclinical feasibility study was performed at the University of Washington's Willed Body Program laboratory. Unembalmed cadavers were placed on the dissection table in positions mimicking those typically required for surgical access to specific nerves that can be challenging to localize. A high-frequency portable ultrasound system was used to identify the nerves. An extraneural injection of methylene blue immediately adjacent to the target nerve was performed under ultrasound guidance as the experimental nerve mapping procedure. Surgical dissections through a small skin incision parallel to skin tension lines were guided by the transducer position and angle. Success was determined by the accuracy and rapidity of surgical identification and exposure of the nerve.

Results
Using ultrasound-guided mapping, all anticipated peripheral nerves were correctly identified via a direct approach from the skin incision. This was confirmed by performing an anatomical dissection to expose and identify the intended nerve and its relation to the injected methylene blue dye. In no case was intraneural injection of the dye observed.

Conclusions
Preoperative ultrasound-guided nerve mapping may be useful in facilitating surgical access to a targeted nerve and thereby minimizing tissue dissection and operating time.
Association between low-back pain and lumbar spine bone density: a population-based cross-sectional study
Authors: Lee Sungkyu , Nam Chung Mo , Yoon Do Heum , Kim Keung Nyun , Yi Seong , Shin Dong Ah , Ha Yoon 
Published: July 2013

Object
The authors undertook this study to investigate the relationships between low-back pain (LBP) and spinal bone density. Low-back pain is a major health issue and contributes to increases in medical and economic costs. Epidemiological studies have identified individual, sociodemographic, psychosocial, and occupational risk factors for LBP. However, there have been limited studies addressing the relationships between LBP and spinal bone density.

Methods
Data were obtained from the population-based Fourth Korea National Health and Nutrition Examination Survey (K-NHANES IV, 2009). From 10,533 K-NHANES participants, the authors identified 7144 (3099 men and 4045 women) 21 years of age or older who underwent dual-energy x-ray absorptiometry and anthropometric measurements for inclusion in this study. Low-back pain patients were defined as those who had been diagnosed with LBP by a medical doctor. Chi-square tests, t-tests, and multivariable logistic regression analyses were used to examine the relationships between LBP and spinal bone density.

Results
The total prevalence of LBP in the patient sample was 17.1%. More females (21.0%) reported LBP than males (12.1%). A number of sociodemographic and medical factors—sex, age, place of residence, occupation, education, hypertension, diabetes mellitus, and depression—were all associated with LBP, while LBP was not associated with income or exercise levels. Regression analyses indicated that higher lumbar spine T-scores (OR 1.11, 95% CI 1.02–1.20) were associated with LBP.

Conclusions
Higher bone density in the lumbar spine is associated with LBP, independent of confounding factors such as sociodemographic status, education, and medical-psychiatric disorders. Cause and effect relationship between higher bone density and LBP, such as degenerative changes in spine, requires further investigation.
Macrovascular decompression of the median nerve for posttraumatic neuralgic limb pain
Authors: Pabaney Aqueel , Hervey-Jumper Shawn L. , Domino Joseph , Maher Cormac O. , Yang Lynda J. S. 
Published: July 2013

Neuropathic pain is rare in children, and few reports provide adequate guidelines for treatment. The authors describe the successful treatment of tardy neuropathic pain via macrovascular decompression in a 15-year-old boy who presented with progressive pain 11 years following trauma to the upper extremity that had required surgical repair of the brachial artery. Examination revealed mild chronic median and ulnar motor neuropathy as well as recent progressive lancinating pain and a Tinel sign at the prior scar. A soft tissue mass in the neurovascular bundle at the site of previous injury was noted on MRI. Surgical exploration demonstrated an altered anatomical relationship of the previously repaired brachial artery and the median nerve, resulting in pulsatile compression of the median nerve by the brachial artery. Neurolysis and decompression of the median nerve with physical separation from the brachial artery resulted in immediate pain relief.
This is the first report of macrovascular decompression of a major peripheral nerve with complete symptom resolution. Noninvasive imaging together with a thorough history and physical examination can support identification of this potential etiology of peripheral neuralgic pain. Recognition and treatment of this uncommon problem may yield improved outcomes for children with neuropathic pain.
Less invasive mini-open adult spinal deformity surgery
Authors: Wang Michael Y. 
Published: July 2013

Adult spinal deformities (ASD) pose a challenge for the spinal surgeon. Because the spine is often rigid, mobilization of the segments is critical for effective correction, particularly in the sagittal plane. While minimally invasive surgery (MIS) has many favorable attributes that would be of great benefit for the ASD population, improvements in lordosis and sagittal balance have remained problematic using MIS approaches, including MIS lateral methods. This video illustrates one method for achieving improvement of coronal and sagittal correction without the extensive exposure and soft tissue envelope disruption needed in open surgery, particularly for less severe deformities. By using multi-level TLIFs through a mini-open surgery, curves of less than 60° can be managed with minimal blood loss and within a reasonable surgical timeframe. While feasibility will have to be proven with larger series and improved surgical methods, this technique holds promise as a means of reducing the significant morbidity associated with surgery in the ASD population.The video can be found here: http://youtu.be/I0rkDSAVas0.
Mini-open transforaminal lumbar interbody fusion
Authors: Amin Beejal Y. , Tu Tsung-Hsi , Mummaneni Praveen V. 
Published: July 2013

The potential advantages of a mini-open transforaminal interbody fusion (TLIF) operation are reduced blood loss, shorter length of stay, and less soft-tissue trauma compared to the standard open technique. Prior reports from our group and others have demonstrated successful outcomes using MIS techniques in lumbar fusion surgery.In this 3D video, we demonstrate the key steps of the mini-open technique for a transforaminal lumbar interbody fusion using an expandable tubular retractor and contralateral percutaneous screw fixation for the treatment of a multiple recurrent disc herniation. The video demonstrates patient positioning, surgical opening with development of the Wiltse plane, placement of the tubular retractor, pedicle screw placement through both a percutaneous technique and a mini-open technique, decompression of the neural elements, graft insertion, and wound closure.The video can be found here: http://youtu.be/LYRU9lbBdNg.
Minimally invasive unilateral approach for bilateral decompression of spinal stenosis and modified transforaminal lumbar interbody fusion for degenerative spondylolisthesis
Authors: Chen Kevin S. , Than Khoi D. , LaMarca Frank , Park Paul 
Published: July 2013

This video describes a minimally invasive approach for treatment of symptomatic grade I spondylolisthesis and high-grade spinal stenosis. In this procedure, a unilateral approach for bilateral decompression is utilized in conjunction with a modified transforaminal lumbar interbody fusion and percutaneous pedicle screw fixation. The key steps in the procedure are outlined, and include positioning, fluoroscopic positioning/guidance, exposure with tubular retractor system, technique for ipsilateral and contra-lateral decompression, disc space preparation and interbody grafting, percutaneous pedicle screw and rod placement, and closure.The video can be found here: http://youtu.be/QTymO4Cu4B0.
Stabilization of the sacroiliac joint with the SI-Bone surgical technique
Authors: Geisler Fred 
Published: July 2013

Although the motion of the sacroiliac joints (SIJ) is minimal, pain can originate from the SIJ on mechanical loading and affect walking, sitting and sleep patterns. The SIJ refers to the pair of joints inferior to the L5-S1 joint, and functions as the inferior adjacent level after a L5-S1 fusion.SIJ pain has a clinical overlay of symptoms often similar to low back pain (LBP) generated by the lumbar spine. The differential diagnosis in any patient with LBP should include the triad of low back, SIJ, and hip. SIJ pain is also a known cause of residual LBP after successful lumbar fusion. Relief of the patient's pain with a diagnostic SIJ block verifies the SIJ as the site of the pain generator.The SI-bone technique of stabilization of the SIJ is a true minimally invasive surgical technique performed through an initial small skin incision and then over pins, with the aid of fluoroscopy in three orthogonal axes with one axis parallel to the posterior sacral cortical line at the S1 to S2 region.The fluoroscopy procedure includes the following steps: 1) pre-op plan of the desired 3 implant trajectories to account for the anatomic variations; 2) placement of 3 Steinman pins at these trajectories across the SIJ starting in a small skin incision; 3) drill, broach and then implant placement as a cannulated system. All these steps are performed with the assistance of fluoroscopy in all three imaging planes – lateral, inlet and outlet views. The SI-Bone implants are triangular shaped titanium and have a rough surface for immediate stability. This rough surface is believed to aid in the osteo-fixation of the implants to the ilium and sacrum, as well as to long term fusion of the SIJ after its prolonged immobilization.The video can be found here: http://youtu.be/2YtFddohZRk.
Four-level minimally invasive lateral interbody fusion for treatment of degenerative scoliosis
Authors: Amin Beejal Y. , Mummaneni Praveen V. , Ibrahim Tarik , Zouzias Alex , Uribe Juan 
Published: July 2013

The benefits of anterior interbody arthrodesis in deformity surgery are well known and include load sharing and increased fusion rates. A minimally invasive lateral transpsoas approach to the anterior lumbar spine is a promising alternative to traditional interbody techniques for the treatment of adult degenerative scoliosis. The reported advantages of the minimally invasive lateral transpsoas approach include reduced blood loss and shorter length of stay. However, there are several approach-related complications associated with this technique including injury to the nerves within the abdominal wall leading to abdominal wall paresis, bowel injury, and injury to the lumbar plexus.In this video, we demonstrate the key steps of the minimally invasive lateral retroperitoneal transpsoas technique for interbody fusion in the treatment of adult degenerative scoliosis.The video demonstrates patient positioning, surgical opening, passage through the anatomical safe zone, use of multidirectional EMG to navigate away from the lumbar plexus, placement of the expandable retractor, discectomy, endplate preparation, graft insertion, and wound closure. Special emphasis is placed on the approach. We highlight the relevant nerves passing through the abdominal wall with the aid of a microscope.The video can be found here: http://youtu.be/XU1OujNF8F8.
A novel approach to the lumbar sympathetic chain: lateral access
Authors: Rodgers Shaun D. , Engler John A. , Perin Noel L. 
Published: July 2013

Plantar hyperhydrosis is a disabling condition of excessive, symmetric, focal sweating of the feet with social, psychological, and medical implications. Treatment options include topical agents, iontophoresis, botulinum toxin injection, and surgical disruption of the lumbar sympathetic chain.Surgical corridors include transperitoneal and retroperitoneal approaches. We report our technique with a novel minimally invasive lateral retroperitoneal approach commonly used for lateral interbody fusions. The lateral approach for sectioning of the sympathetic chain in the treatment of hyperhydrosis appears safe. The approach may be advantageous for the patient and surgeons familiar with lateral interbody fusion. Further studies may elucidate the long term efficacy and safety of the lateral approach.The video can be found here: http://youtu.be/Q82SGpmAXng.
Anterior to psoas fusion of the lumbar spine
Authors: Gragnaniello Cristian , Seex Kevin A. 
Published: July 2013

Lateral interbody cages have proven useful in lumbar fusion surgery. Spanning both lateral cortical rims while sparing the anterior longitudinal ligament, they restore disc height, improve coronal balance and add stability. The standard approach to their insertion is 90 degrees lateral transpsoas which is bloodless compared to other techniques of interbody cage insertion but requires neuro-monitoring and at L4/5 can be difficult because of iliac crest obstruction or an anterior plexus position. The oblique muscle-splitting approach with the patient in a lateral position, remains retroperitoneal, and on the left side enters the disc space through a window between psoas and the common iliac vein. Reports of this approach are few and none previously have described how to use the large lateral-type cages so effective at restoring spinal alignment. In this video we demonstrate our technique of anterior to psoas fusion of the lumbar spine with a retroperitoneal approach and gentle retraction of the psoas muscle.The video can be found here: http://youtu.be/OS2vNcX9JMA.
Minimally invasive surgery for lumbar microdiscectomy
Authors: Kimball Jon , Yew Andrew , Lu Daniel C. 
Published: July 2013

Symptomatic disc herniation is a common indication for spinal operations. The open microscopic discectomy has been the traditional method of addressing this pathology, but minimally invasive techniques are increasingly popular.Potential advantages of the MIS microdiscectomy approach include decreased muscle and soft tissue disruption, shorter length of stay and decreased postoperative pain. Here we demonstrate an MIS microdiscectomy on a 24-year-old female with a left L-4 and L-5 radiculopathy secondary to a large L4–5 disc herniation.The video can be found here: http://youtu.be/aXyZ2FJMh2s.
Minimally invasive tubular surgery for transforaminal lumbar interbody fusion
Authors: Kimball Jon , Yew Andrew , Getachew Ruth , Lu Daniel C. 
Published: July 2013

Transforaminal lumbar interbody fusion (TLIF) was originally developed as a method for circumferential fusion via a single posterior approach and is now an extremely common procedure for the treatment of lumbar instability. More recently, minimally invasive techniques have been applied to this procedure with the goal of decreasing tissue disruption, blood loss and postoperative patient discomfort. Here we describe a minimally invasive tubular TLIF on a 60-year-old male with radiculopathy from an unstable L4–5 spondylolisthesis.The video can be found here: http://youtu.be/0BbxQiUmtRc.
Lateral lumbar interbody fusion
Authors: Kanter Adam S. , Gandhoke Gurpreet S. 
Published: July 2013

Since its inception in the year 2001 the minimally invasive trans-psoas Lateral Lumbar Interbody Fusion (LLIF) approach has gained significant favor among spine surgeons. It is now routinely utilized to treat an array of spinal pathologies including degenerative disc disease, low grade spondylolisthesis, and adult spinal deformity. The intent of this video is to provide a step by step account of the basic procedural details when performing the LLIF procedure for a single level broad based degenerated lumbar disc with herniation.The video can be found here: http://youtu.be/dZFMqmCz6Q8.