681 research outputs found
Museum Ukir Tradisional Jawa Tengah Di Jepara Pendekatan Pada Ekspresi Ruang
Indonesia memerlukan adanya sebuah wadah sebagai Landmark kesenian ukir Indonesia yang dapat mewadahi kesenian ukir dari beberapa Wilayah Indonesia sebagai upaya melestarikan
kasanah kebudayaan bangsa ini dari kepunahan yang dapat mengancam penurunan citra kepribadian bangsa Indonesia. Dari observasi yang di lakukan dengan di tunjang studi literatur yang memadai serta menganalisis dan menciptakan sintesis sementara menghasilkan sebuah perancangan museum yang mempunyai filosofi ukir yang kuat dengan pengaplikasian terhadap ekspresi ruang dan tampilan bangunan menjadikan sebuah museum dengan tampilan modern
yang tanpa meninggalkan roh dari ukir utamanya. Sehingga museum ukir dapat mendistribusikan maksud positif dari filosofi ukir melalui sebuah bangunan
Anomalous coercivity enhancement with temperature and tunable exchange bias in Gd and Ti co-doped BiFeO multiferroics
We have investigated the effect of temperature on magnetic properties of
BiGdFeTiO (x = 0.00-0.20) multiferroic system.
Unexpectedly, the coercive fields () of this multiferroic system
increased with increasing temperature. The coercive fields and remanent
magnetization were higher over a wide range of temperatures in sample x = 0.10
i.e. in sample having composition BiGdFeTiO
than those of x = 0.00 and 0.20 compositions. Therefore, we have carried out
temperature dependent magnetization experiments extensively for sample x =
0.10. The magnetic hysteresis loops at different temperatures exhibit an
asymmetric shift towards the magnetic field axes which indicate the presence of
exchange bias effect in this material system. The hysteresis loops were also
carried out at temperatures 150 K and 250 K by cooling down the sample from 300
K in various cooling magnetic fields (). The exchange bias field
() values increased with and decreased with temperature. The
values were tunable by field cooling at temperatures up to 250 K.Comment: 7 page
False-negative upper extremity ultrasound in the initial evaluation of patients with suspected subclavian vein thrombosis due to thoracic outlet syndrome (Paget-Schroetter syndrome)
OBJECTIVE: To assess the utilization and consequences of upper extremity Duplex ultrasound in the initial diagnostic evaluation of patients with suspected subclavian vein (SCV) thrombosis and venous thoracic outlet syndrome (VTOS).
METHODS: A retrospective single-center review was conducted for patients that underwent primary surgical treatment for VTOS between 2008 and 2017, in whom an upper extremity ultrasound had been performed as the initial diagnostic test (n = 214). Clinical and treatment characteristics were compared between patients with positive and false-negative ultrasound studies.
RESULTS: There were 122 men (57%) and 92 women (43%) that had presented with spontaneous idiopathic arm swelling, including 28 (13%) with proven pulmonary embolism, at a mean age of 30.7 ± 0.8 years (range 14-69). Upper extremity ultrasound had been performed 23.8 ± 12.2 days after the onset of symptoms, with confirmation of axillary-SCV thrombosis in 169 patients (79%) and negative results in 45 (21%). Of the false-negative ultrasound study reports, only 8 (18%) acknowledged limitations in visualizing the central SCV. Definitive diagnostic imaging (DDI) had been obtained by upper extremity venography in 175 (82%), computed tomography angiography in 24 (11%), and magnetic resonance angiography in 15 (7%), with 142 (66%) undergoing catheter-directed axillary-SCV thrombolysis. The mean interval between initial ultrasound and DDI was 48.9 ± 14.2 days with no significant difference between groups, but patients with a positive ultrasound were more likely to have DDI within 48 hours than those with a false-negative ultrasound (44% vs 24%; P = .02). At the time of surgical treatment, the SCV was widely patent following paraclavicular decompression and external venolysis alone in 74 patients (35%). Patch angioplasty was performed for focal SCV stenosis in 76 (36%) and bypass graft reconstruction for long-segment axillary-SCV occlusion in 63 (29%). Patients with false-negative initial ultrasound studies were significantly more likely to require SCV bypass reconstruction than those with a positive ultrasound (44% vs 25%; P = .02).
CONCLUSIONS: Duplex ultrasound has significant limitations in the initial evaluation of patients with suspected SCV thrombosis, with false-negative results in 21% of patients with proven VTOS. This is rarely acknowledged in ultrasound reports, but false-negative ultrasound studies have the potential to delay definitive imaging, thrombolysis, and further treatment for VTOS. Initial false-negative ultrasound results are associated with progressive thrombus extension and a more frequent need for SCV bypass reconstruction at the time of surgical treatment
A critical review of MANET testbed using mobile robot Technology
This paper is a continuation of our previous paper under the same topic, MANET testbed using mobile robot technology. In our previous paper, we studied the topic by scrutinizing all the technical aspects and presented it as a technical review. However in this paper, we study the topic and presents it as a critical review that dwells into four aspect, namely (i) purpose, a ccessibility and s cope of testbed facilities, (ii) usability and c ontrollability of robot m obility in t estbed facilities, (iii) repeatability and r e producibility of real m obility in t estbeds, and (iv) tools for MANET implementation, deployment and d ebugging for e xperiments. With the wealth of information on the topic provided in this paper, the content of this paper is expected to be a source of reference for MANET researchers who are at a crossroad when selecting the preferred mobile robot technology and approach to suit their own specific needs
Preparation of high crystalline nanoparticles of rare-earth based complex pervoskites and comparison of their structural and magnetic properties with bulk counterparts
A simple route to prepare GdSrMnO nanoparticles by
ultrasonication of their bulk powder materials is presented in this article.
For comparison, GdSrMnO nanoparticles are also prepared by
ball milling. The prepared samples are characterized by X-ray diffraction
(XRD),field emission scanning electron microscope (FESEM), energy dispersive
X-ray (EDX), X-ray photoelectron spectroscope (XPS), and Superconducting
Quantum Interference Device (SQUID) magnetometer. XRD Rietveld analysis is
carried out extensively for the determination of crystallographic parameters
and the amount of crystalline and amorphous phases. FESEM images demonstrate
the formation of nanoparticles with average particle size in the range of
50-100 nm for both ultrasonication and 4 hours (h) of ball milling. The bulk
materials and nanoparticles synthesized by both ultrasonication and 4 h ball
milling exhibit a paramagnetic to spin-glass transition. However, nanoparticles
synthesized by 8 h and 12 h ball milling do not reveal any phase transition,
rather show an upturn of magnetization at low temperature. The degradation of
the magnetic properties in ball milled nanoparticles may be associated with
amorphization of the nanoparticles due to ball milling particularly for milling
time exceeding 8 h. This investigation demonstrates the potential of
ultrasonication as a simple route to prepare high crystalline rare-earth based
manganite nanoparticles with improved control compared to the traditional ball
milling technique.Comment: 9 pages, 6 figure
Physical therapy management, surgical treatment, and patient-reported outcomes measures in a prospective observational cohort of patients with neurogenic thoracic outlet syndrome
OBJECTIVE: To assess the results of physical therapy management and surgical treatment in a prospective observational cohort of patients with neurogenic thoracic outlet syndrome (NTOS) using patient-reported outcomes measures.
METHODS: Of 183 new patient referrals from July 1 to December 31, 2015, 150 (82%) met the established clinical diagnostic criteria for NTOS. All patients underwent an initial 6-week physical therapy trial. Those with symptom improvement continued physical therapy, and the remainder underwent surgery (supraclavicular decompression with or without pectoralis minor tenotomy). Pretreatment factors and 7 patient-reported outcomes measures were compared between the physical therapy and surgery groups using t-tests and χ
RESULTS: Of the 150 patients, 20 (13%) declined further treatment or follow-up, 40 (27%) obtained satisfactory improvement with physical therapy alone, and 90 (60%) underwent surgery. Slight differences were found between the physical therapy and surgery groups in the mean ± standard error degree of local tenderness to palpation (1.7 ± 0.1 vs 2.0 ± 0.1; P = .032), the number of positive clinical diagnostic criteria (9.0 ± 0.3 vs 10.1 ± 0.1; P = .001), Cervical-Brachial Symptom Questionnaire scores (68.0 ± 4.1 vs 78.0 ± 2.7; P = .045), and Short-Form 12-item physical quality-of-life scores (35.6 ± 1.5 vs 32.0 ± 0.8; P = .019) but not other pretreatment factors. During follow-up (median, 21.1 months for physical therapy and 12.0 months for surgery), the mean change in QuickDASH scores for physical therapy was -15.6 ± 3.0 (-29.5% ± 5.7%) compared with -29.8 ± 2.4 (-47.9% ± 3.6%) for surgery (P = .001). The patient-rated outcomes for surgery were excellent for 27%, good for 36%, fair for 26%, and poor for 11%, with a strong correlation between the percentage of decline in the QuickDASH score and patient-rated outcomes (P \u3c .0001).
CONCLUSIONS: The present study has demonstrated contemporary outcomes for physical therapy and surgery in a well-studied cohort of patients with NTOS, reinforcing that surgery can be effective when physical therapy is insufficient, even with substantial pretreatment disability. Substantial symptom improvement can be expected for ∼90% of patients after surgery for NTOS, with treatment outcomes accurately reflected by changes in QuickDASH scores. Within this cohort, it was difficult to identify specific predictive factors for individuals most likely to benefit from physical therapy alone vs surgery
- …
