keyword
MENU ▼
Read by QxMD icon Read
search

MCA

keyword
https://www.readbyqxmd.com/read/28821131/carboxymethyl-cellulose-production-from-sugarcane-bagasse-with-steam-explosion-pulping-experimental-modeling-and-optimization
#1
Loghman Golbaghi, Mehrdad Khamforoush, Tahmasb Hatami
The sugarcane bagasse was used for producing carboxymethyl cellulose (CMC) and obtaining high-molecular-mass hemicellulose as co-product. To this end, the steam explosion process was employed. It was found that the optimum operating conditions are the temperature of 187.15°C, NaOH/bagasse ratio of 39% (w/w), and retention time (RT) of 10min. Next, the obtained cellulose in the optimized condition was extracted and purified, and it was subsequently converted to CMC according to Williamson etherification technique...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28816362/social-space-and-cultural-class-divisions-the-forms-of-capital-and-contemporary-lifestyle-differentiation
#2
Magne Flemmen, Vegard Jarness, Lennart Rosenlund
In this article, we address whether and how contemporary social classes are marked by distinct lifestyles. We assess the model of the social space, a novel approach to class analysis pioneered by Bourdieu's Distinction. Although pivotal in Bourdieu's work, this model is too often overlooked in later research, making its contemporary relevance difficult to assess. We redress this by using the social space as a framework through which to study the cultural manifestation of class divisions in lifestyle differences in contemporary Norwegian society...
August 17, 2017: British Journal of Sociology
https://www.readbyqxmd.com/read/28812311/nad-replenishment-with-nicotinamide-mononucleotide-protects-blood-brain-barrier-integrity-and-attenuates-delayed-tpa-induced-haemorrhagic-transformation-after-cerebral-ischemia
#3
Chun-Chun Wei, Yuan-Yuan Kong, Xia-Hua, Guo-Qiang Li, Si-Li Zheng, Ming-He Cheng, Pei Wang, Chao-Yu Miao
BACKGROUND AND PURPOSE: Tissue plasminogen activator (tPA) is the only approved pharmacological therapy for acute brain ischemia; however, a major limitation of tPA is the haemorrhagic transformation followed by tPA treatment. Here, we determine whether nicotinamide mononucleotide (NMN), a key intermediate of nicotinamide adenine dinucleotide biosynthesis, would affect tPA-induced haemorrhagic transformation. EXPERIMENTAL APPROACH: Middle cerebral artery occlusion (MCAO) was achieved in CD1 mice by introducing a filament to the left MCA for 5 hours...
August 15, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28811644/the-link-between-enso-like-forcing-and-hydroclimate-variability-of-coastal-east-asia-during-the-last-millennium
#4
Jungjae Park, Jiwoo Han, Qiuhong Jin, Junbeom Bahk, Sangheon Yi
Inconsistent reconstructions of East Asian hydroclimate for the last millennium significantly limit our understanding of the mechanisms behind climate variability during the medieval climate anomaly (MCA) and little ice age (LIA) in the region. In this study, we present new high-resolution multiproxy records (diatom, δ(13)C, C/N, TS) from the Mulyoungari swamp, Jeju Island, South Korea. Our results indicate that El Niño southern oscillation-like variations caused the dry MCA/wet LIA pattern in the study area...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808799/transorbital-endoscopic-approach-for-exposure-of-the-sylvian-fissure-middle-cerebral-artery-and-crural-cistern-an-anatomical-study
#5
João Paulo Almeida, Armando S Ruiz-Treviño, Sathwik R Shetty, Sacit B Omay, Vijay K Anand, Theodore H Schwartz
BACKGROUND: The availability of minimal access instrumentation and endoscopic visualization has revolutionized the field of minimally invasive skull base surgery. The transorbital endoscopic approach using an eyelid incision has been proposed as a new minimally invasive technique for the treatment of skull base pathology, mostly extradural tumors. Our study aims to evaluate the anatomical aspects and potential role of the transorbital endoscopic approach for exposure of the sylvian fissure, middle cerebral artery and crural cistern...
August 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28808606/middle-cerebral-artery-dissection-causing-subarachnoid-hemorrhage-and-cerebral-infarction-trapping-with-high-flow-bypass-preserving-the-lenticulostriate-artery
#6
Hideaki Ono, Tomohiro Inoue, Shinya Suematsu, Takeo Tanishima, Akira Tamura, Isamu Saito, Nobuhito Saito
BACKGROUND: Spontaneous intracranial arterial dissection (IAD) is an increasingly important cause of stroke, such as subarachnoid hemorrhage (SAH) and hemodynamic or thromboembolic cerebral ischemia. IAD usually occurs in the posterior circulation, and is relatively rare in the anterior circulation including the middle cerebral artery (MCA). Various surgical and endovascular methods to reduce blood flow in the dissected lesion have been proposed, but no optimum treatment has been established...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28808603/aneurysm-treatment-practice-patterns-for-newly-appointed-dual-trained-cerebrovascular-endovascular-neurosurgeons-comparison-of-open-surgical-to-neuroendovascular-procedures-in-the-first-2-years-of-academic-practice
#7
Bowen Jiang, Matthew T Bender, Bima Hasjim, Frank P K Hsu, Rafael J Tamargo, Judy Huang, Geoffrey P Colby, Alexander L Coon, Li-Mei Lin
BACKGROUND: The practice patterns of a hybrid open cerebrovascular/neuroendovascular (CVNV) neurosurgeon in early academic practice is unknown. METHODS: We performed a multi-institutional retrospective cohort study of patients with cerebral aneurysms that were treated within the first 24 months of the neurosurgeon's practice. RESULTS: A total of 533 aneurysms were treated by the three senior authors within the first 24 months of their academic practice...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28808385/anti-inflammatory-effect-of-etlingera-pavieana-pierre-ex-gagnep-r-m-sm-rhizomal-extract-and-its-phenolic-compounds-in-lipopolysaccharide-stimulated-macrophages
#8
Ekaruth Srisook, Mullika Palachot, Sakulrat Mankhong, Klaokwan Srisook
BACKGROUND: In our continuing search for anti-inflammatory agents from Thai herbs, Etlingera pavieana (Pierre ex Gagnep.) R.M.Sm. showed potent inhibition on nitric oxide (NO) production in lipopolysaccharide (LPS)-induced macrophages. However, the mechanism behind its inhibitory effect has not been yet explored, and little is known regarding its bioactive compounds responsible for the anti-inflammatory effect. OBJECTIVE: In the present study, anti-inflammatory effect of hexane, ethyl acetate, and water fractions of rhizomal ethanol extracts of E...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807750/high-resolution-simultaneous-imaging-of-intracranial-and-extracranial-arterial-wall-with-improved-cerebrospinal-fluid-suppression
#9
Lei Zhang, Na Zhang, Jun Wu, Xin Liu, Yiu-Cho Chung
PURPOSE: To develop a technique for three dimensional (3D) high resolution joint imaging of intracranial and extracranial arterial walls with improved cerebrospinal fluid (CSF) suppression and good blood suppression based on T1 weighted sampling perfection with application optimized contrast using different angle evolutions (T1w-SPACE) and to compare this technique (hereafter, iSPACE) with alternating with nutation for tailored excitation (DANTE) prepared SPACE sequence (DANTE-SPACE) for their CSF suppression performance around the mid cerebral arteries (MCA) and blood suppression at carotid arteries...
August 11, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28806555/environmental-and-socio-economic-sustainability-appraisal-of-contaminated-land-remediation-strategies-a-case-study-at-a-mega-site-in-china
#10
Yinan Song, Deyi Hou, Junli Zhang, David O'Connor, Guanghe Li, Qingbao Gu, Shupeng Li, Peng Liu
Green and sustainable remediation (GSR) has become a global trend in the contaminated land remediation field. Growing numbers of countries have adopted GSR procedures published in regulatory and/or technical guidance. China is fast becoming one of the largest remediation markets in the world, and is beginning to engage with GSR. Among other efforts, a taskforce is currently developing the first Chinese technical standard on GSR. This paper presents the context positioning and development of a sustainable remediation assessment indicator set for China...
August 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28799861/absence-of-cortical-vein-opacification-is-associated-with-lack-of-intra-arterial-therapy-benefit-in-stroke
#11
Ivo G H Jansen, Annemieke B van Vuuren, Wim H van Zwam, Ido R van den Wijngaard, Olvert A Berkhemer, Hester F Lingsma, Cornelis H Slump, Robert J van Oostenbrugge, Kilian M Treurniet, Diederik W J Dippel, Marianne A A van Walderveen, Aad van der Lugt, Yvo B W E M Roos, Henk A Marquering, Charles B L M Majoie, René van den Berg
Purpose To assess the degree of cortical vein opacification in patients with internal carotid artery or middle cerebral artery (MCA) stroke and to evaluate the relationship with treatment benefit from intra-arterial therapy (IAT). Materials and Methods Written informed consent was obtained from all patients in the Multicenter Randomized Clinical Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands. From the trial's database, all patients (recruited from December 2010 until March 2014) with baseline computed tomographic (CT) angiograms were retrospectively included...
August 11, 2017: Radiology
https://www.readbyqxmd.com/read/28792025/developing-a-combined-strategy-for-monitoring-the-progress-of-aptamer-selection
#12
Zhaofeng Luo, Lei He, Jinjun Wang, Xiaona Fang, Liyun Zhang
The development of a simple, low-cost, time-saving and universally applicable method to monitor the progression of aptamer selection is particularly challenging. Herein, a combined strategy dependent on quantitative polymerase chain reaction amplification curve (AC) and melting curve analysis (MCA) is developed to monitor the convergence of the aptamer species during selection progress. As a parallel and complementary method to affinity tests and binding analyses, the AC-MCA method can be used to achieve the DNA complexity assay when affinity is undetectable...
August 9, 2017: Analyst
https://www.readbyqxmd.com/read/28790780/doppler-indices-of-the-umbilical-and-fetal-middle-cerebral-artery-at-18-40-weeks-of-normal-gestation-a-pilot-study
#13
Satyabrat Srikumar, Jyotindu Debnath, R Ravikumar, H C Bandhu, V K Maurya
BACKGROUND: Doppler indices form an integral component of noninvasive evaluation of fetal well-being. There is paucity of information about normal obstetric Doppler indices, particularly from the Indian subcontinent. The aim of the study was to find the values of pulsatility index (PI), resistive index (RI) of umbilical artery (UA), and fetal middle cerebral artery (MCA) and calculate cerebro-placental ratio (CP ratio) for 18-40 weeks of normal gestation so that a reference range of these Doppler values can be postulated...
July 2017: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28790215/-a-case-of-ruptured-distal-anterior-choroidal-artery-aneurysm-associated-with-a-twig-like-middle-cerebral-artery-treated-with-single-stage-aneurysm-clipping-and-sta-mca-double-anastomoses-in-the-acute-phase
#14
Toshimoto Seno, Kanehisa Kohno, Hideo Tanaka, Shinji Iwata, Shinya Fukumoto, Haruhisa Ichikawa, Noriyuki Fumoto, Akihiro Inoue, Saya Ozaki, Yawara Nakamura, Shohei Kohno, Shiro Ohue
We report the case of a patient who has progressed well over 5 years following single-stage aneurysm clipping and superficial temporal artery-middle cerebral artery(STA-MCA)double anastomoses in the acute phase, for a ruptured distal anterior choroidal artery(AChA)aneurysm accompanied by a twig-like MCA. The patient was a 49-year-old female who developed a sudden severe headache and disturbance of consciousness due to subarachnoid hemorrhage and intraventricular hemorrhage(IVH). Cerebral angiography showed a right twig-like MCA associated with an abnormal vascular network and a ruptured aneurysm in the distal AChA...
August 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28790049/cor-triatriatum-and-stroke
#15
Jose Danilo Bengzon Diestro, Joseph Justin Hipolito Regaldo, Eddieson Masangcay Gonzales, Maria Kristina Casanova Dorotan, Adrian Isidro Espiritu, Jose Leonard Rivera Pascual
Cor triatriatum sinistrum (CTS) is a congenital anomaly where the left atrium is divided into two compartments by a fibromuscular membrane. This report aims to add to the literature on a rare cardiac condition that can cause neurological morbidity. We report a case of a 19-year-old female with an infarct in the right middle cerebral artery (MCA) territory initially maintained on aspirin. Eighteen months later, she had recurrence of weakness, for which repeat transthoracic echocardiography (TTE) and re-evaluation of the first TTE demonstrated a hyperechoic membrane spanning the width of the left atrium, clinching the diagnosis of CTS...
August 8, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28790001/increased-ratio-of-superficial-temporal-artery-flow-rate-after-superficial-temporal-artery-to-middle-cerebral-artery-anastomosis-can-it-reflect-the-extent-of-collateral-flow
#16
Sung-Won Jin, Sung-Kon Ha, Hae-Bin Lee, Sang-Dae Kim, Se-Hoon Kim, Dong-Jun Lim
OBJECTIVE: There are several ways to identify donor artery patency and success of surgery after an anastomosis of the superficial temporal artery (STA) to the middle cerebral artery (MCA). The purpose of this study was to evaluate the ratio of bilateral STA mean flow rate (MFR) using color Doppler ultrasonography (CDUS) after bypass surgery and to confirm the possibility of this value as a predictor of the extent of collateral flow. METHODS: Eleven consecutive patients who had undergone STA-MCA anastomosis were included...
August 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28782146/cerebroplacental-ratio-in-reduced-fetal-movements-evidence-for-worsening-fetal-hypoxemia
#17
Julia Binder, Caitriona Monaghan, Baskaran Thilaganathan, José Morales-Roselló, Asma Khalil
OBJECTIVE: To investigate the fetal cerebroplacental ratio (CPR) in women presenting with reduced fetal movements (RFM). METHODS: This is a retrospective cohort study conducted over a 7-year period at a Fetal Medicine Unit at a tertiary referral centre. 4500 singleton pregnancies presenting with RFM after 36 weeks' gestation and 1527 control pregnancies at a similar gestation without RFM were analysed. Fetal biometry and Doppler parameters were recorded and converted into centiles and multiples of the median (MoM)...
August 7, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28781921/ruptured-mycotic-aneurysms-report-and-outcomes-of-two-surgically-managed-patients
#18
Aleena Khan, Muhammad Waqas, Waseem M Nizamani, Muhammad E Bari
BACKGROUND: Mycotic aneurysm is a rare potentially life-threatening complication of infective endocarditis (IE). Little data is available on the management and outcomes of ruptured mycotic aneurysms with large intracerebral hematoma. Few cases have been described on the management of mycotic aneurysm in the presence of life-threatening hematoma and mass effect. CASE DESCRIPTION: We are presenting two cases of ruptured mycotic aneurysm with intracerebral hematoma and impending brain herniation...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28780523/the-uk-mental-capacity-act-and-consent-to-research-participation-asking-the-right-question
#19
Paul Willner
This paper considers the meaning of the term 'intrusive research', as used in the UK Mental Capacity Act 2005 (MCA), in relation to studies in which an informant is asked to provide information about or on behalf of a person who lacks capacity to consent, and who is not otherwise involved in the study. The MCA defines 'intrusive research' as research that would legally require consent if it involved people with capacity. The relevant ethical principles are that consent should be sought from people who would be affected by a piece of research and that this requirement should be implemented proportionately...
August 5, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28777746/characterization-of-breast-calcification-types-using-dual-energy-x-ray-method
#20
Niki Martini, Vaia Koukou, George Fountos, Christos Michail, Athanasios Bakas, Ioannis S Kandarakis, Robert David Speller, George C Nikiforidis
Calcifications are products of mineralization whose presence is usually associated with pathological conditions. The minerals mostly seen in several diseases are calcium oxalate (CaC2O4), calcium carbonate (CaCO3) and hydroxyapatite (HAp). Up to date, there is no in-vivo method that could discriminate between minerals. To this aim, a dual energy X-ray method was developed in the present study. An analytical model was implemented for the determination of the Calcium/Phosphorus mass ratio (mca/mp ). The simulation was carried out using monoenergetic and polyenergetic X-rays and various calcification thicknesses (100 to 1000 um) and types (CaC2O4, CaCO3, HAp)...
August 4, 2017: Physics in Medicine and Biology
keyword
keyword
97907
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"