bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Chemistry Learning with PjBL and PBL Model Based on Tetrahedral Chemistry Representation in term of Student’s Creativity
Authors: Widyasari Frenika , Indriyanti Nurma Yunita , Mulyani Sri 
Published: February 2019

<p>This research aims to know: (1) the effect of PjBL and PBL models based on tetrahedral chemistry representation toward student’s achievement; (2) the effect of creativity toward student’s achievement; and (3) the interaction between PjBL and PBL models based on tetrahedral chemistry representation with creativity toward student’s achievement on the colloid subject in <em>SMA Negeri 1 Sragen</em>. This research used quasi experiment method with 2×2 factorial design. Samples of research were determined with cluster random sampling technique and used 2 classes in <em>SMA Negeri 1 Sragen</em>. Data has been collected by test, questionnaire, observation, and literature documents which owned by teacher. Hypothesis testing of this research for cognitive and skill aspects of learning achievement used parametric test of Anova two ways, and for attitude aspect of learning achievement used non-parametric test of Kruskal-Wallis. The results of this research showed that: (1) there was no effect of chemistry learning using of PjBL and PBL models based on tetrahedral chemistry representation toward knowledge, attitude, and skill aspects of student’s achievement; (2) there was effect of high and low creativity toward knowledge and skill aspects of student’s achievement but there was no effect toward attitude aspect of student’s achievement; and (3) there was no interaction between using PjBL and PBL models based on tetrahedral chemistry representation with creativity toward knowledge, attitude, and skill aspects of student’s achievement.</p><p> </p>
Development of Interactive Chemistry Learning Devices using Domino Chemical Media in terms of Student Activity and Learning Outcomes of Class X High School in Samarinda
Authors: Hermawanti Medita , Nurhadi Mukhamad , Majid Abdul 
Published: February 2019

<p>This research focuses on research and development of learning devices using Chemical Domino media. The product of this research is Interactive Chemical Domino learning media, which focused on compound nomenclature material for class X which is expected feasible to be used as learning media. The subjects in this study are divided into 2 stages, the first is the small group test in which only 12 students from SMA Negeri 1 Samarinda participate. The second is field test (large group) which 96 students from 3 high schools participate, namely SMA Negeri 1 Samarinda, 36 students from Madrasah Aliyah Negeri 2 Samarinda, and 36 students from SMA Negeri 5 Samarinda. The results showed that the validation of media experts scored 85.77%, material expert validation scored 88.63%. In learning media validation, it showed that validation of RPP scored 92.08%, LKS validation scored 92.67%. For student response results scored 81.25%. From those scores it can be concluded that development of learning device using Media Chemical Domino is "very good”. Meanwhile for the observation results of student activity increased up to 33.71% and for student learning results from posttest and daily test reach KKM with percentage of student learning result 77,34%.</p><p> </p>
An Optimization of Functional Monomer, A Preliminary Study of Meropenem Imprinted Polymer as Selective Sorbent
Authors: Sirumapea Lasmaryna , Zulfikar Muhammad Ali , Amran M. Bachri , Alni Anita 
Published: February 2019

<p>Molecularly imprinted polymer is a polymer that synthesized together with targeted molecule (analyte) through polymerization process. When the polymerization has completed, extraction is taken to pull the analyte out of the polymer, and it will give a specific “frame” of targeted molecule which leave cavities and further is used to give specific recognition of the analyte. Functional monomer, template molecule, crosslinker agent, porogenic solvent and initiator are the main components involved in the synthesis of this kind of polymer. The right functional monomer is needed to make polymer building block with high selectivity when used as sorbent. The selection of suitable and precise functional monomer has been elaborated in this study. methacrylate acid, itaconic acid and acrylamide is then studies as functional monomer that will be chosen to give the best polymer performance as sorbent. From IR spectrum results, it can be concluded that polymer has been synthesized successfully. Peak at 1157 cm<sup>-1</sup> which is a peak of C-N bond from β-lactam ring support this statement. Finally, it can be concluded that methacrylate acid is the best functional monomer for making polymer as sorbent for meropenem</p>
Validation of the TSH IRMA Kit for Determination of the TSH Levels in Human Blood Serum
Authors: Mondrida Gina , Sutari Sutari , Triningsih Triningsih , Setyowati Sri , Yulianti S V. , Lestari Wening , Ariyanto Agus , Widayati Puji 
Published: February 2019

<p>TSH IRMA kit is a kit used for the determination of TSH (Thyroid Stimulating Hormone) levels in human blood serum. Thyroid hormone is a hormone that our bodies need for growth of the brain, bone and other tissues and regulate the metabolism in the body.<strong> </strong>TSH normal range for adult is in the range of 0.4-4.5 mIU/L, whereas for baby is about 3.0-18.0 mIU/L. Thyroid would affect the quality of optimal growth of children if disturbed. Therefore, TSH assay in the blood needs to be determined to know whether the function of the thyroid gland works normally or not. Detection of TSH in blood can be performed by Immunoradiometricassay (IRMA) method. IRMA method is one of the immunoassay techniques based on immunological reactions (antigen-antibody binding) using radionuclide <sup>125</sup>I as a tracer, that sample in small quantity can be detected.<em> </em> IRMA method was developed locally by replacing TSH IRMA kit which is costly since imported from commercial companies. Center for Radioisotope and Radiopharmaceutical Technology (PTRR) BATAN has successfully developed the TSH IRMA kit that can be used to determine the levels of TSH in human blood. TSH IRMA kit must be validated to know the limit of detection, sensitivity, accuracy, precision and the assay parameters, such as Non-Specific Binding (NSB) and Maximum Binding (MB). Validation of TSH IRMA kit had been carried out resulting in the limit of detection of 0.115 ng/mL, accuracy with a recovery of 93.6-108.0 %, intra-assay precision (% CV) QC L = 1.9848, QC M = 3.6360 % and QC H = 2.2085 % while the inter-assay precision (% CV) QC L = 11.0055, QC M = 5.6768 % and QC H = 5.4181 %. It was concluded that this TSH IRMA kit showed good performance based on the % NSB and % B/T of 0.68 and 34.64 %, respectively.</p>
Equalising the Gender: A Study on Women and Transwomen Enterprises in Kerala
Authors: E. Akhila , V. A. Ursula 
Published: February 2019

<p>The study is focusing on the impact that the entrepreneurship made on the social life of women as well as transwomen in Kerala, India. The Kudumbashree Mission of Kerala, which is a self-help group movement for women in the state is one of the efforts that running successfully since 1998 achieving the gender equality in all the walks of life through women empowerment. Kudumbashree is also showing a model by defining the womanhood in a wider perspective by including the transwomen. It is a novel and path-breaking initiative by Kudumbashree to start micro enterprises for transwomen. The success stories of Kudumbashree women enterprises are model to the country in its role to empower the women. The present study particularly focuses on the impact that the enterprises made on the social life of women as well as transwomen in terms of recognition, reception and reward. The study followed a narrative approach to draw the lived experiences of the participants who selected purposively from the Kozhikode District of Kerala State. <em></em></p>
Major Aseptic Revision Following Total Knee Replacement
Authors: Jorgensen Nicholas B. , McAuliffe Michael , Orschulok Thomas , Lorimer Michelle F. , de Steiger Richard 
Published: February 2019

Background:
Major revision is associated with less satisfactory outcomes, substantial complications, and added cost. Data from the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR) were analyzed to identify factors associated with major aseptic revision (MAR) of primary total knee replacement (TKR).

Methods:
The cumulative percent major aseptic revision rate following all primary TKRs performed in Australia from September 1, 1999, to December 31, 2015, was assessed. Kaplan-Meier estimates of survivorship were utilized to describe the time to first revision. Hazard ratios (HRs) from Cox proportional hazard models, adjusted for age and sex, were utilized to compare revision rates.

Results:
There were 5,973 MARs recorded from the total cohort of 478,081 primary TKRs. The cumulative percent MAR at 15 years was 3.0% (95% confidence interval [CI], 2.8% to 3.2%). Fixed bearings had a significantly lower rate of MAR at 15 years: 2.7% (95% CI, 2.4% to 2.9%) compared with 4.1% (95% CI, 3.8% to 4.5%) for mobile bearings (HR, 1.77 [95% CI, 1.68 to 1.86]; p < 0.001). Age had a significant effect on MAR rates, with a cumulative percent revision at 15 years for patients <55 years old of 7.8% (95% CI, 6.5% to 9.2%) compared with 1.0% for those ≥75 years old (95% CI, 0.8% to 1.1%; p < 0.001). Minimally stabilized TKR had a lower rate of MAR compared with posterior-stabilized TKR after 2 years (HR, 0.83 [95% CI, 0.77 to 0.90]; p < 0.001). Cementless fixation had a higher rate of revision than cemented or hybrid fixation. There was a higher rate of MAR with non-navigated compared with computer navigated TKR (HR, 1.32 [95% CI, 1.21 to 1.44], p < 0.001). The tibial component was revised more commonly than the femoral component.

Conclusions:
Younger age, posterior stabilization, cementless fixation, a mobile bearing, and non-navigation were risk factors for higher rates of MAR following TKR.

Level of Evidence:
Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
Two-Stage Revision of Total Hip Arthroplasty for Infection Is Associated with a High Rate of Dislocation
Authors: McAlister Ian P. , Perry Kevin I. , Mara Kristin C. , Hanssen Arlen D. , Berry Daniel J. , Abdel Matthew P. 
Published: February 2019

Background:
Two-stage exchange is the most common form of treatment of chronic infection following total hip arthroplasty (THA). We examined the prevalence of, and risk factors associated with, hip instability following 2-stage exchange as well as the fate of reimplanted hip prostheses that dislocated.

Methods:
Data on 515 2-stage exchange THAs performed between 2000 and 2014 at a single institution were retrospectively reviewed. Risk factors for instability as well as postoperative reoperations and revisions were analyzed. The impact of dislocation on these outcomes was evaluated as well. The mean age at the time of reimplantation was 65 years, and the mean duration of follow-up was 5 years (range, 2 to 15 years).

Results:
Dislocation occurred in 52 hips following reimplantation (cumulative probability = 8.9% at 1 year). There was a higher risk of instability in women (hazard ratio [HR] = 1.8, p = 0.038) and in those who had a history of dislocation prior to the 2-stage revision (HR = 5.1, p < 0.001). Younger age, body mass index, number of previous operations, spacer type, surgical approach, use of a constrained liner, femoral head diameter, and persistent or recurrent infection were not found to be significant risk factors. Patients with an absent or ununited greater trochanter or abductor deficiency also had a higher rate of dislocation (HR = 30, p < 0.001), as did patients who underwent reimplantation with a megaprosthesis (HR = 6.0, p < 0.001). The risk of additional reoperations (HR = 121, p < 0.001) and revision surgery (HR = 13, p < 0.001) was significantly higher in patients who experienced a dislocation after the 2-stage exchange.

Conclusions:
Dislocation after 2-stage exchange THA continues to be a major concern, with the 1-year cumulative probability found to be 9% in the present study. Female sex, a history of dislocation, an absent or ununited greater trochanter or abductor deficiency, and reimplantation with a megaprosthesis were identified as risk factors for dislocation. There is a remarkable 121-fold increase in the rate of reoperations and a 13-fold increase in the rate of revisions in hips that dislocated after 2-stage exchange THA.

Level of Evidence:
Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
Personality Assessment in Orthopaedic Surgery
Authors: Tornetta Paul , Jacobs Joshua J. , Sterling Robert S. , Kogan Monica , Fletcher Keaton A. , Friedman Alan M. 
Published: February 2019

Abstract:
Personality assessment tools are used effectively in many arenas of business, but they have not been embraced by the medical profession. There is increasing evidence that these tools have promise for helping to match resident candidates to specific fields of medicine, for mentoring residents, and for developing improved leadership in our field. This paper reviews many aspects of personality assessment tools and their use in orthopaedic surgery.
Negative Patient-Experience Comments After Total Shoulder Arthroplasty
Authors: Menendez Mariano E. , Shaker Jonathan , Lawler Sarah M. , Ring David , Jawa Andrew 
Published: February 2019

Background:
There is growing interest in enhancing the patient experience after discretionary orthopaedic surgery. Patient narratives are a potentially valuable but largely unscrutinized source of information. Using machine learning to understand sentiment within patient-experience comments, we explored the content of negative comments after total shoulder arthroplasty (TSA), their associated factors, and their relationship with traditional measures of patient satisfaction and with perioperative outcomes.

Methods:
An institutional registry was used to link the records of 186 patients who had undergone elective primary TSA between 2016 and 2017 with vendor-supplied patient satisfaction data, which included patient comments and the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) survey. Using a machine-learning-based natural language processing approach, all patient comments were mined for sentiment and classified as positive, negative, mixed, or neutral. Negative comments were further classified into themes. Multivariable logistic regression was employed to determine characteristics associated with providing a negative comment.

Results:
Most patients (71%) provided at least 1 comment; 32% of the comments were negative, 62% were positive, 5% were mixed, and 1% were neutral. The themes of the negative comments were room condition (27%), time management (17%), inefficient communication (13%), lack of compassion (12%), difficult intravenous (IV) insertion (10%), food (10%), medication side effects (6%), discharge instructions (4%), and pain management (2%). Women and sicker patients were more likely to provide negative comments. Patients who made negative comments were more likely to be dissatisfied with overall hospital care and with pain management (2 HCAHPS core items), but there were no differences in any of the studied outcomes (peak pain intensity, opioid intake, operative time, hospital length of stay, discharge disposition, or 1-year American Shoulder and Elbow Surgeons [ASES] score) between those who provided negative comments and those who did not.

Conclusions:
Patient-narrative analysis can shed light on the aspects of the process of care that are most critiqued by patients. While patient satisfaction may not be a surrogate for effectiveness of care or functional outcomes, efforts to improve the hospital environment, enhance nontechnical skills, and reduce unnecessary delays are important in providing high-quality, patient-centered care after TSA.
Energy, Environment, and Social Development: The Technology Arm of Sustainability
Authors: Alnuaim Sami 
Published: February 2019

President's column
The oil and gas industry faces three key questions with regard to sustainability. Can we transform oil and gas into a cleaner, efficient source of energy with minimum or zero-net CO2 emissions? How do we use technology to transform our industry to a low-carbon-intensity industry to help in addressing the global climate change challenge, while extending the economic and social benefits of oil and gas to improve human lifestyle on earth? Can we scientifically and globally measure the sustainability performance of our industry with respect to the following four pillars: environmental impact, economic growth, social development, and lifestyle improvements?
These are very challenging questions facing our industry. Without addressing the environmental concerns related to our industry, we risk our ability to operate globally and hinder our ability to attract talent. I believe that with the best practices, the right strategy, adequate R&D investment, and the right technology deployment, our industry can and will achieve these goals. I have spoken in prior columns about the fact oil and gas will be part of the energy mix well into the future, and about the significant economic and social development our industry produces. Given global opinion, we have no choice except to develop and use technology to transform our industry to be a low-carbon industry with minimum environmental impact across the entire oil and gas value chain.
As I have met with oil ministers, CEOs, and executives around the world, I believe our industry is on the right track toward establishing the required infrastructure to achieve these goals in the mid-to-long term. If we look at our industry across the upstream, midstream, and downstream sectors, we see hundreds of best practices and advanced technologies that can be linked directly to our sustainability performance and its four pillars mentioned above. My February column focused on how technology was helping our transformation on the supply side. In this column I would like to look at how R&D and technology are improving our environmental performance.
The upstream sector (exploration, drilling, and production) requires large amounts of energy to extract oil and gas from reservoirs and transport it to surface facilities through subsurface tubing and gathering lines, often going through harsh environments, including subsea. This provides many opportunities for improved energy efficiency, which reduces costs and is therefore good business practice. Upstream is also a technology-intensive sector, where new technologies have been deployed, helping the sector to be more sustainable.
One Industry of Global Citizens
Authors: Zborowski Matt 
Published: February 2019

Special Section: The Value and Future of Petroleum Engineering
For the average oil and gas technical professional who spends hours each day scrutinizing the details, it is easy to forget the big picture.
Solving the latest engineering problem comes first. Then comes solving the next one. And the problems are unique to each person and their job function. The challenges faced by drilling engineers differ from those of completion engineers, and theirs differ from those of reservoir engineers.
Then there are the men and women toiling away in the geoscience disciplines, which are also integral to exploration, development, and production. How about the newcomers: the data scientists? And nothing happens without approval from the folks in finance.
Often it can feel like the industry consists of too many moving parts, each following a path independent of the others. It can be like herding cats. It is also what makes the work interesting. Finding and extracting hydrocarbons from thou-sands of meters beneath the subsurface, after all, is a complicated undertaking that requires the expertise and experiences of a great many.
Working together, these professionals accomplish feats that defy impossible. Poring over that one small detail—the problem that beget several other problems—is integral in ensuring a reservoir is tapped to its potential, the company hits its production targets, and the world’s steadily growing thirst for energy is quenched.
With the same ethic, the industry has also shown it is capable of far more.
The industry is truly a global one with major operations on and off six continents. Firms double as their countries’ primary energy producer, revenue generator, and employer. Large global operators and service firms each depend on the work of tens of thousands of people, with, in some cases, the majority from outside those firms’ native countries. Business partnerships transcend borders and cultures.
Schlumberger, for example, runs its business through its offices in Houston, Paris, London, The Hague, and Willemstad, employing some 100,000 people worldwide consisting of more than 140 nationalities from 85 countries. French major Total employs just fewer than 100,000 people of 150 nationalities from 130 countries. Spain’s Repsol has a workforce of 84 different nationalities in 37 countries, with 1,800 employees working outside their home country. Of the almost 70,000 employees who work at ExxonMobil, 60% work outside the major’s native US.
The result of this rich diversity is a community of people numbering in the millions with the life experiences, knowledge, expertise, and resources to take on some of the world’s great sustainability challenges—together.
And it is happening company by company. Below is a recent sampling of the countless causes, initiatives, programs, and projects undertaken by some of the world’s biggest and best-known oil and gas firms. It provides a small glimpse of the greater, big-picture impact made by the industry.
Nutrient Leaching in Soil Affected by Fertilizer Application and Frozen Ground
Authors: Grant Kirsten N. , Macrae Merrin L. , Rezanezhad Fereidoun , Lam W. Vito 
Published: February 2019

Core Ideas
Preferential flow is prevalent in clay soil under both frozen and thawed conditions.
Preferential flow dominates the infiltration regime under frozen soil conditions in silt loam.
Subsurface placement of fertilizer can limit subsurface nutrient leaching.
Subsurface placement is particularly effective in soil with abundant preferential flow.
Subsurface placement is recommended for fall fertilizer application.
Agricultural runoff containing P and N from drainage tiles contributes to nutrient loading in waterways, leading to downstream eutrophication. Recent studies suggest that nutrient losses through tile drains can be reduced if nutrients are applied in the subsurface. This study explored interactions between nutrient supply and infiltrating water during a simulated nongrowing season using a laboratory experiment to understand how water and nutrients move through partially frozen and unfrozen soil and if fertilizer placement influences NO3− and dissolved reactive P (DRP) leaching. Intact silt loam and clay soil monoliths (28 by 30 by 30 cm) were fertilized with P and N via subsurface placement or surface broadcast and subjected to simulated rainfall under unfrozen (10°C) and partially frozen (∼0°C) conditions. Conservative tracers (Br−, Cl−, and D2O) applied to characterize subsurface flow paths throughout a subset of events indicated that matrix flow dominated in unfrozen silt loam soil. However, preferential flow paths dominated in unfrozen clay and in both soil types under partially frozen conditions, transporting applied nutrients while minimizing contact with the soil matrix. The subsurface placement of inorganic fertilizer relative to surface broadcast reduced both NO3− (by 26.85 kg ha−1 [23%] in silt loam and 65.73 kg ha−1 [61%] in clay) and DRP losses (by 2.33 kg ha−1 [60%] in silt loam and 4.25 kg ha−1 [64%] in clay). This study demonstrates the advantage of subsurface placement of fertilizer in the reduction of nutrient leaching by limiting the interaction of the nutrient supply with preferential flow pathways.