Linear Regression Coefficient Research Articles

Pengaruh Kemampuan Komunikasi Terhadap Kinerja Karyawan di Instansi Penerbangan: Studi pada Karyawan di UPBU Kelas 1 Mutiara Sis Al-Jufri Palu

Effective communication is crucial for enhancing efficiency and human resource quality in aviation organizations like UPBU class 1 Mutiara Sis Al-Jufri Palu. Both leaders and employees rely heavily on communication to perform their tasks effectively. This research aims to assess the impact of communication skills on employee performance in this institution. The study employs a quantitative approach, collecting data through questionnaires and literature review. Comprehensive analysis includes testing data validity, reliability, and normality, as well as conducting simple linear regression analysis, partial t-tests, and coefficient of determination (R²) tests to evaluate the relationship between communication skills and employee performance at UPBU class 1 Mutiara Sis Al-Jufri Palu. The findings indicate that communication skills significantly influence employee performance, with an R Square value of 0.629, suggesting that approximately 62.9% of the variability in employee performance can be explained by their communication abilities

The influence of information technology and compensation on the employees performance of the regional revenue and financial management agency

The objectives of this study were 1) to determine the effect of Information Technology on performance at the Regional Financial and Revenue Management Agency (BPKPD) of Tomohon City; 2) To determine the effect of Compensation on employee performance at the Regional Financial and Revenue Management Agency (BPKPD) of Tomohon City; 3) To determine the effect of Information Technology and Compensation simultaneously on employee performance at the Regional Financial and Revenue Management Agency (BPKPD) of Tomohon City. The research method used is quantitative research method. Primary data were obtained through questionnaires distributed to 70 employees as research samples. Research data testing techniques include using validity tests, reliability tests, multiple linear regression model tests, hypothesis tests, and coefficient of determination tests. The results showed that 1) There is a positive functional influence that contributes between Information Technology and employee performance; 2) There is a positive functional influence that contributes between compensation and employee performance; 3) There is a positive functional influence that contributes between Information Technology and Compensation together on Employee Performance.

Portable X-ray fluorescence spectrometry: a cost-effective method for analysing trace metals in deposited dust.

For projects requiring extensive environmental sampling and rapid decision-making to identify trace metal contamination using dust wipes, the cost and time required for wet chemistry analysis can be prohibitive. Under such circumstances there is a need for a suitable screening method that is cost-effective, efficient, and portable. To address this need, this study investigated the utility of portable X-ray fluorescence (pXRF) for the analysis of trace metals in dust wipes. Here, 316 dust wipe samples from three different geographical settings co-located with mining and smelting operations were investigated for their trace metal loadings (μg m-2) of arsenic (As), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), lead (Pb), and zinc (Zn) using pXRF. Results collected using pXRF were compared against inductively coupled plasma mass spectrometry (ICP-MS) concentrations using matched dust wipes (n = 87) to assess reproducibility. A subset of dust wipes (n = 4) were subject to different pXRF analytical scenarios (ranging from 1 to 12 pXRF measurements) using a standardised test duration of 30 seconds to identify the most efficient number of tests for analytical precision. Conducting four pXRF tests on a single wipe (total exposure time of 120 seconds) returned comparable results to ICP-MS and was adopted for analysis of all samples. Results from dust wipes analysed with both ICP-MS and pXRF (n = 87) showed moderate to strong Spearman Rho correlations (rs = 0.489-0.956, p < 0.01) and linear regression coefficients of variation demonstrated good agreement between methods (R2 = 0.432-0.989, p < 0.05). Linear regression equations were used to correct pXRF data to the ICP-MS dust wipe data for samples analysed by both approaches, and applied to pXRF data that were not subject to ICP-MS analysis (n = 229). Application of the correction formula resulted in a substantial improvement of pXRF's accuracy and precision, confirming its effectiveness for assessing trace metals in dust wipes.

Correlation between serum trimethylamine-N-oxide and body fat distribution in middle-aged and older adults: a prospective cohort study

BackgroundTrimethylamine-N-oxide (TMAO) is linked with obesity, while limited evidence on its relationship with body fat distribution. Herein, we investigated the associations between serum TMAO and longitudinal change of fat distribution in this prospective cohort study.MethodsData of 1964 participants (40–75y old) from Guangzhou Nutrition and Health Study (GNHS) during 2008–2014 was analyzed. Serum TMAO concentration was quantified by HPLC–MS/MS at baseline. The body composition was assessed by dual-energy X-ray absorptiometry at each 3-y follow-up. Fat distribution parameters were fat-to-lean mass ratio (FLR) and trunk-to-leg fat ratio (TLR). Fat distribution changes were derived from the coefficient of linear regression between their parameters and follow-up duration.ResultsAfter an average of 6.2-y follow-up, analysis of covariance (ANCOVA) and linear regression displayed women with higher serum TMAO level had greater increments in trunk FLR (mean ± SD: 1.47 ± 4.39, P-trend = 0.006) and TLR (mean ± SD: 0.06 ± 0.24, P-trend = 0.011). Meanwhile, for women in the highest TMAO tertile, linear mixed-effects model (LMEM) analysis demonstrated the annual estimated increments (95% CI) were 0.03 (95% CI: 0.003 – 0.06, P = 0.032) in trunk FLR and 1.28 (95% CI: -0.17 – 2.73, P = 0.083) in TLR, respectively. In men, there were no similar significant observations. Sensitivity analysis yielded consistent results.ConclusionSerum TMAO displayed a more profound correlation with increment of FLR and TLR in middle-aged and older community-dwelling women in current study. More and further studies are still warranted in the future.Trial registrationNCT 03179657.

Correlation between serum trimethylamine-N-oxide and body fat distribution in middle-aged and older adults: a prospective cohort study

BackgroundTrimethylamine-N-oxide (TMAO) is linked with obesity, while limited evidence on its relationship with body fat distribution. Herein, we investigated the associations between serum TMAO and longitudinal change of fat distribution in this prospective cohort study.MethodsData of 1964 participants (40–75y old) from Guangzhou Nutrition and Health Study (GNHS) during 2008–2014 was analyzed. Serum TMAO concentration was quantified by HPLC–MS/MS at baseline. The body composition was assessed by dual-energy X-ray absorptiometry at each 3-y follow-up. Fat distribution parameters were fat-to-lean mass ratio (FLR) and trunk-to-leg fat ratio (TLR). Fat distribution changes were derived from the coefficient of linear regression between their parameters and follow-up duration.ResultsAfter an average of 6.2-y follow-up, analysis of covariance (ANCOVA) and linear regression displayed women with higher serum TMAO level had greater increments in trunk FLR (mean ± SD: 1.47 ± 4.39, P-trend = 0.006) and TLR (mean ± SD: 0.06 ± 0.24, P-trend = 0.011). Meanwhile, for women in the highest TMAO tertile, linear mixed-effects model (LMEM) analysis demonstrated the annual estimated increments (95% CI) were 0.03 (95% CI: 0.003 – 0.06, P = 0.032) in trunk FLR and 1.28 (95% CI: -0.17 – 2.73, P = 0.083) in TLR, respectively. In men, there were no similar significant observations. Sensitivity analysis yielded consistent results.ConclusionSerum TMAO displayed a more profound correlation with increment of FLR and TLR in middle-aged and older community-dwelling women in current study. More and further studies are still warranted in the future.Trial registrationNCT 03179657.

Pengaruh Disiplin Kerja dan Motivasi Kerja terhadap Kinerja Karyawan pada PT XYZ

PT XYZ is a company with a wide network and services for the community. To achieve success in a company, good performance is required, which is based on work discipline and work motivation. The aim of the research is to determine the influence of work discipline and work motivation on employee performance at PT XYZ. This research uses a quantitative approach with nonprobability sampling data collection techniques, namely saturated sampling. The population in this study consisted of all PT XYZ employees, with a total sample of 47 respondents. Primary data was collected using questionnaires in Likert scale units. Data processing uses SPSS 25 software for the tests used are data quality test, classical assumption test, multiple linear regression analysis, hypothesis testing, and coefficient of determination. The results of this research are proven by the results of the partial test (T) on the work discipline variable (X1) showing that there is a positive and significant influence on the employee performance variable (Y) and on the work motivation variable (X2) it also shows that there is a positive and significant influence on the variable employee performance (Y), while the results of the simultaneous test research (F) show that there is a positive and significant influence of the variables work discipline (X1) and work motivation (X2) on employee performance (Y).

Pengaruh Disiplin Kerja dan Motivasi Kerja terhadap Kinerja Karyawan pada PT XYZ

PT XYZ is a company with a wide network and services for the community. To achieve success in a company, good performance is required, which is based on work discipline and work motivation. The aim of the research is to determine the influence of work discipline and work motivation on employee performance at PT XYZ. This research uses a quantitative approach with nonprobability sampling data collection techniques, namely saturated sampling. The population in this study consisted of all PT XYZ employees, with a total sample of 47 respondents. Primary data was collected using questionnaires in Likert scale units. Data processing uses SPSS 25 software for the tests used are data quality test, classical assumption test, multiple linear regression analysis, hypothesis testing, and coefficient of determination. The results of this research are proven by the results of the partial test (T) on the work discipline variable (X1) showing that there is a positive and significant influence on the employee performance variable (Y) and on the work motivation variable (X2) it also shows that there is a positive and significant influence on the variable employee performance (Y), while the results of the simultaneous test research (F) show that there is a positive and significant influence of the variables work discipline (X1) and work motivation (X2) on employee performance (Y).

Preparation of CoFe@C composite modified electrode for neohesperidin dihydrochalcone sensing and its application in Chinese medicine.

CoFe@C was first prepared by calcining the precursor of CoFe-metal-organic framework-74 (CoFe-MOF-74), then an electrochemical sensor for the determination of neohesperidin dihydrochalcone (NHDC) was constructed, which was stemmed from the novel CoFe@C/Nafion composite film modified glassy carbon electrode (GCE). The CoFe@C/Nafion composite was verified by field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). Electrochemical impedance spectroscopy (EIS) was used to evaluate its electrical properties as a modified material for anelectrochemical sensor. Compared with CoFe-MOF-74 precursor modified electrode, CoFe@C/Nafion electrode exhibited a great synergic catalytic effect and extremely increased the oxidation peak signal of NHDC. The effects of various experimental conditions on the oxidation of NHDC were investigated and the calibration plot was tested. The results bespoken that CoFe@C/Nafion GCE has good reproducibility and anti-interference under the optimal experimental conditions. In addition, the differential pulse current response of NHDC was linear with its concentration within the range0.08 ~ 20µmol/L, and the linear regressioncoefficient was 0.9957. The detection limit was as low as 14.2nmol/L (S/N = 3). In order to further verify the feasibility of the method, it was successfully used to determine the content of NHDC in Chinese medicine, with a satisfactory result, good in accordance with that of high performance liquid chromatography (HPLC).

Pengaruh Gaya Hidup dan Income terhadap Financial Management Behavior

In this era of increasingly advanced and easily accessible technology, especially information technology which offers comfort, convenience and speed in accessing various information, we are spoiled by the changes it brings, both positive and negative. This is especially seen among young people or the millennial generation, who tend to be more active in using social media. This research aims to determine the influence of lifestyle and income on financial management behavior in case studies of factory employees located in the MM2100 area, either partially or simultaneously. Sampling was carried out using random sampling technique, resulting in 95 respondents. This research collects data using a questionnaire. The data analysis techniques used include multiple linear regression analysis, hypothesis testing (t test and f test), and coefficient of determination. Data processing was carried out using the SPSS version 26 software program. The results of this research show that lifestyle and income partially or simultaneously have a significant influence on the financial management behavior of factory employees in companies located in the MM2100 area. The results of the R-Square determination test of the influence of lifestyle and income variables on financial management behavior were 94.0%. And the remaining 5.1% is influenced by other variables not included in this research.

HUBUNGAN GAYA MENGAJAR, MOTIVASI BELAJAR DAN POLA ASUH ORANGTUA TERHADAP PRESTASI BELAJAR SISWA SDN KUTISARI I/268 SURABAYA

This study aims to determine the effect of teaching style, learning motivation, and parenting style on student learning achievement at SDN Kutisari I/268 Surabaya. The population and sample in this study were all students in grade VI and part of grade V at SDN Kutisari I/268 Surabaya. Data collection in this study used a questionnaire using a quantitative approach. The analysis techniques used were validity and reliability tests, classical assumption tests, multiple linear regression tests, t tests, f tests, and coefficient of determination tests. The results showed that varied teaching styles, strong learning motivation, and supportive parenting had a significant positive impact on student achievement at SDN Kutisari I268 Surabaya. The results of this study emphasize the importance of the role of teachers, parents, and student motivation in creating an optimal learning environment to improve learning outcomes.

Factors Influencing Shopee Users’ Purchase Decisions: An Islamic Economics Perspective

The purpose of this study is to investigate the impact of product reviews and trust on Shopee purchasing behavior from the perspective of Islamic Economics. Data was gathered via surveys and analyzed using data analysis procedures such as the validity test, reliability test, classical assumption test, multiple linear regression analysis, t-test, F test, and coefficient of determination. This study makes use of product review factors, trust variables, and purchasing decision variables. The result indicates product review and trust are significant positives to purchasing decisions. The study emphasizes the importance of product evaluations and trust in influencing shopping decisions on Shopee within the context of Islamic Economics. Recognizing the interaction of these elements may help firms, platform operators, and legislators make strategic decisions about how to create a climate conducive to internet trade while adhering to ethical and Islamic standards.

Analytical method development and validation for the simultaneous estimation of montelukast and Acebrophylline by RP- HPLC method

High performance liquid chromatography is at present one of the most sophisticated tool of the analysis. The estimation of Montelukast and Acebrophylline was done by RP-HPLC. The Phosphate buffer was pH 3.0 and the mobile phase was optimized with consists of Methanol: Phosphate buffer mixed in the ratio of 70:30 % v/ v. Inertsil C18 column C18 (4.6 x 150mm, 5mm) or equivalent chemically bonded to porous silica particles was used as stationary phase. The detection was carried out using UV detector at 260 nm. The solutions were chromatographed at a constant flow rate of 0.8 ml/min. the linearity range of Montelukast and Acebrophylline were found to be from 100-500 mg/ml of Montelukast and 1-5mg/ml of Acebrophylline . Linear regression coefficient was not more than 0.999.The values of % RSD are less than 2% indicating accuracy and precision of the method. The percentage recovery varies from 98-102% of Montelukast and acebrophylline. LOD and LOQ were found to be within limit. The results obtained on the validation parameters met ICH and USP requirements .it inferred the method found to be simple, accurate, precise and linear. The method was found to be having suitable application in routine laboratory analysis with high degree of accuracy and precision.

An Optimized Method for LC-MS-Based Quantification of Endogenous Organic Acids: Metabolic Perturbations in Pancreatic Cancer.

Accurate and reliable quantification of organic acids with carboxylic acid functional groups in complex biological samples remains a major analytical challenge in clinical chemistry. Issues such as spontaneous decarboxylation during ionization, poor chromatographic resolution, and retention on a reverse-phase column hinder sensitivity, specificity, and reproducibility in multiple-reaction monitoring (MRM)-based LC-MS assays. We report a targeted metabolomics method using phenylenediamine derivatization for quantifying carboxylic acid-containing metabolites (CCMs). This method achieves accurate and sensitive quantification in various biological matrices, with recovery rates from 90% to 105% and CVs ≤ 10%. It shows linearity from 0.1 ng/mL to 10 µg/mL with linear regression coefficients of 0.99 and LODs as low as 0.01 ng/mL. The library included a wide variety of structurally variant CCMs such as amino acids/conjugates, short- to medium-chain organic acids, di/tri-carboxylic acids/conjugates, fatty acids, and some ring-containing CCMs. Comparing CCM profiles of pancreatic cancer cells to normal pancreatic cells identified potential biomarkers and their correlation with key metabolic pathways. This method enables sensitive, specific, and high-throughput quantification of CCMs from small samples, supporting a wide range of applications in basic, clinical, and translational research.

Enhanced OER performance by varying Al-WO3 electrocatalyst thickness: Process optimization

Oxygen evolution reactions (OER) are highly significant and play a critical role in the advancement of fuel cells, electrolyzers, chemicals, and solar energy conversion devices. The challenge in the quest is attributed to the absence of an efficient electrocatalyst assembly that functions optimally. A simple method of electrodeposition of Al:WO3 on a fluorinated tin oxide (FTO) electrode was used to investigate the OER in this study. The electrodepositions were achieved by employing a three-electrode cell at various scan rates ranging from 10 to 100 mV/s. During this investigation, the influence of the scan rate on electrocatalyst loadings and the impact of electrocatalyst layer thickness on the OER were examined. The electrodepositions of Al:WO3@FTO were analyzed using a range of optical, chemical, and physical techniques such as SEM, XRD, FT-IR, Raman spectroscopy, EDX, EDS mapping, and electrochemical tests. The FTIR and Raman analysis confirmed the synthesis of AL:WO3 while the peaks detected at angles 38.7° and 43° by XRD with planes (111) and (200), served as a distinctive characteristic for identifying aluminum (Al). The peaks observed at angles of 27.8°, 30.7°, 33°, 50.45°, and 58° correspond to WO3 material. The characterization techniques also confirmed that the synthesized material is highly crystalline in nature. The OER potential using Al:WO3@FTO electrodes with different electrocatalyst thicknesses, ranging from 8 nm to 31 nm was investigated by studying various electrochemical techniques such as CV, LSV, CPE, Tafel slope, HP2P splitting, EIS, TOF, short and long-term electrode stability, and double layer capacitance. The linear regression coefficient (R2) was also calculated to measure the relationship between the electrocatalyst's thickness and each electrochemical test. The findings indicated that increasing the scan rates resulted in thinner and denser electrodepositions on the FTO substrate as the thinnest film was formed at 100 mV/s. An inverse relationship between electrocatalyst layer thickness and OER activity was observed. The electrode with the thinnest and most compact electrocatalyst layer, specifically ED Al:WO3@FTO08, exhibited the lowest onset potential of 1.48 V and a maximum current of 84 mA/cm2 at 1.76 V. It also demonstrated superior reaction kinetics, as evidenced by its lower Tafel slope value of 49 mV/dec, which is the lowest among all the electrodes that were prepared. In particular, the electrode with a thin and compact electrocatalyst layer worked better in OER operations than the other five electrodes that had higher amounts of Al:WO3.

The Effect of E-WOM and Consumer Satisfaction on Repurchase Interest in Azarine Sunscreen in Cirebon

This study aims to determine the effect of Electronic Word Of Mouth and Consumer Satisfaction on Azarine Sunscreen in Cirebon. This study used descriptive analysis with a quantitative approach. The population in this study is consumers of Azarine Sunscreen in Cirebon with the number of samples used as many as 200 respondents. The sampling method used is nonprobability sampling with sampling techniques using purposive sampling, as well as data collection techniques using questionnaires. The analysis methods used are validity tests and reliability tests, classical assumption tests which include normality tests, multicollinearity tests and heteroscedasticity tests, and hypothesis tests that include linear regression analysis, F tests, t tests, and coefficients of determination (R2) with analytical tools using SPSS29 (Statistical Product and Service Solutions) applications. The results showed that Electronic Word Of Mouth had a significant effect on Azarine Sunscreen Repurchase Interest in Cirebon, Consumer Satisfaction had a significant effect on Azarine Sunscreen Repurchase Interest in Cirebon, and Electronic Word Of Mouth and Consumer Satisfaction variables simultaneously affected Azarine Sunscreen Repurchase Interest in Cirebon.

#1688 Association of baseline serum activin levels with left atrial diameter at 5 years post-kidney transplantation: results from the KNOW-KT

Abstract Background and Aims Serum activin A inhibits muscle growth, promotes apoptosis, and impairs heart function. However, the role of serum activin remains unclear in kidney transplant patients, where cardiovascular complications are a significant cause of morbidity and mortality. In this multicenter, observational cohort study, we investigated a potential association of pre-transplant serum activin levels with the left atrial (LA) diameter, an indicator of diastolic burden and a predictor of cardiovascular complications, to indirectly assess the impact of pre-transplant activin levels on heart function in kidney transplant patients. Method Overall, 602 kidney transplant patients from KNOW-KT (Korean cohort study for outcome in patients with kidney transplantation) were analyzed. Activin levels were measured at baseline immediately before kidney transplantation (KT). The primary outcome was the LA diameter that was measured by transthoracic echocardiography at 5 years after KT. Results The mean age of study population was 45.4 years and 221 (46.7%) patients were men. Pre-transplant serum activin levels were 718.4 ± 363.2 (mean ± standard deviation). When activin levels were divided into categorical variables according to the median value, the ejection fraction of LV showed a lower tendency in the high-activin group (64.3 ± 7.0) compared to the low-activin group (65.3 ± 6.2); however, there was no statistical significance (P=0.069). LV diastolic dimension was significantly higher in the high-activin group (47.3 ± 5.3) compared to the low-activin group (46.3 ± 5.5) (P=0.021). Notably, the post-transplant LA diameter was 37.0 ± 7.0 mm in the low-activin group and 39.1 ± 6.5 mm in the high-activin group, showing a significant difference (P&amp;lt;0.001). The multivariate linear regression coefficient for association between activin groups and LA diameter was 1.08 (95% confidence interval [CI], 0.67-2.10, P=0.037). In an additional logistic regression analysis of LA diameter groups, the high activin group was significantly associated with the high LA diameters compared to the low-activin group in multivariate analysis (adjusted odds ratio [OR], 2.04; 95% CI, 1.34-3.09, P=0.001). When activin levels were used as a continuous variable, adjusted ORs of activin for high LA diameters were 1.29 (95% CI, 1.04-1.60, P=0.018). Conclusion Pre-transplant serum activin levels were independently associated with a higher post-transplant LA diameter, suggesting that activin may negatively affect heart functions in kidney transplant patients. Therefore, activin may be a potential prognostic and therapeutic target in kidney transplant patients.

Adaptability parameters of the trait ‘1000-grain weight’ of spring barley in the conditions of the Ryazan region

The purpose of the current work was to study the ecological adaptability and stability of the trait ‘1000-grain weight’ of spring barley varieties of different ecological and geographical origins over three years of research in the conditions of the Ryazan region. To analyze and study this issue 26 varieties of the collection nursery were studied on the fields of the laboratory of breeding and primary seed production of ISA, a branch of the FSBI FRAEC VIM, located in the forest-steppe agroclimatic zone of the Ryazan region in 2021–2023. To calculate the adaptability parameters, there were used the following coefficients and indicators: adaptability coefficient (AC), yield range (d, %), homeostatic index (Homi), variety yield stability level index (VISLi, %), environmental adaptability (a linear regression coefficient) (bi), stability of the trait (σd2), index of environmental conditions (Ij), stability factor (SF), genetic flexibility of the variety (Ymin+Ymax/2), stress resistance (Ymin–Ymax) and coefficient of responsiveness to favorable growing conditions (Cr), calculated using appropriate methods. The study has established that the dominant influence (66.4 %) on the variability of the trait ‘1000-grain weight’ of the studied varieties is made by the factor “year” (growth and development conditions). A significant contribution to the formation of the indicator “weight of 1000 grains” is made by the meteorological conditions of the grain filling phase (July) – HTC (r = +0.722 p = 0.01) and the amount of precipitation (r = +0.637, p = 0.01). 80.8 % of the 26 varieties studied belonged to the large-grain group (1000-grain weight was more than 50.0 g), the average varietal yield of the varieties was quite high with 6.84 t/ha. Based on the principle of ranking the obtained indicators of adaptability of the trait ‘1000-grain weight’ and its components, there were identified the varieties ‘Dobry’, ‘Magutny’ (Republic of Belarus) and ‘Lenetah’ (USA), which took, respectively, first, second and third places in the rating scale. It can be recommended to involve these varieties in a breeding crossbreeding program to increase grain size.

Simultaneous determination of five plant hormones in cotton leaves using QuEChERS combined with HPLC‒MS/MS

BackgroundPlant hormones profoundly influence cotton growth, development, and responses to various stresses. Therefore, there is a pressing need for an efficient assay to quantify these hormones in cotton. In this groundbreaking study, we have established QuEChERS-HPLC‒MS/MS method, for the simultaneous detection of multiple plant hormones in cotton leaves, allowing the analysis and quantification of five key plant hormones.ResultsSample extraction and purification employed 0.1% acetic acid in methanol and C18 for optimal recovery of plant hormones. The method applied to cotton demonstrated excellent linearity across a concentration range of 0.05–1 mg·L−1, with linear regression coefficients exceeding 0.99. The limits of quantification (LOQs) were 20 μg·kg−1 for GA3 and 5 μg·kg−1 for the other four plant hormones. Recovery rates for the five plant hormones matrix spiked at levels of 5, 10, 100, and 1000 μg·kg−1 were in the range of 79.07% to 98.97%, with intraday relative standard deviations (RSDs) ranging from 2.11% to 8.47%. The method was successfully employed to analyze and quantify the five analytes in cotton leaves treated with plant growth regulators.ConclusionThe study demonstrates that the method is well-suited for the determination of five plant hormones in cotton. It exhibits excellent selectivity and sensitivity in detecting field samples, thus serving as a robust tool for in-depth research into cotton physiology.

Proposal and Validation of a New Index to Assess the Difficulty of Lower Third Molar Extraction.

A prospective cohort study on a sample of patients of the Master of Oral Surgery of the University of Seville in which multiple linear regression coefficients were calculated with a subsequent validation study of the results in the sample of patients operated in the Hospital Palmaplanas of Mallorca. The regression line obtained after applying the statistical methodology to the cohort of patients from the University of Seville obtained significant dependent variables such as depth, roots, and odontosection. Once applied to the cohort of patients from the Palmaplanas Hospital in Mallorca, a regression coefficient was obtained between the data received and the estimated 0.770. The formula proposed in this article presents significant validity in the prediction of the surgical time of extraction of the lower third molars included.

Analysis of Patient Satisfaction at the Ngudi Sehat Clinic Manang Baki Sukoharjo

Analysis of the Influence of Service Quality on Patient Satisfaction at the Ngudi Sehat Manang Baki Sukoharjo Clinic. This research aims to determine and explain the influence of Service Quality consisting of Reliability, Guarantee, Physical Evidence, Empathy and Responsiveness on Patient Satisfaction at the Ngudi Waras Manang Baki Sukoharjo Clinic. The population of this study was all 257 patients of the Ngudi Sehat Manang Baki Sukoharjo Clinic in 2023 with a sample of 125 people using the Ferdinad formula. Data collection using questionnaires. The data analysis techniques used for statistical analysis are multiple linear regression test, F test, t test, and coefficient of determination. The research results show that service quality has a positive and significant effect on patient satisfaction at the Ngudi Sehat Manang Baki Sukoharjo Clinic. Physical evidence contributed to patient satisfaction by 97%, while the remaining 3% was explained by other variables not proposed in this study. The suggestion from this research is that the Ngudi Sehat Manang Baki Sukoharjo Clinic needs to improve all dimensions of service quality so that patient satisfaction can increase.