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Application Of Accuracy And Precision Evaluations Based On The Current United States And Indonesian Pharmacopoeias: A Critical Review, Gunawan Indrayanto

Makara Journal of Science

New methods for the evaluation of accuracy and precision are mentioned in the latest edition of the United States Pharmacopoeia (USP), whereas other validation parameters, that is, selectivity, linearity, range, and robustness, remained relatively unchanged. In obtaining reliable data from any chemical/pharmaceutical analysis, the analytical procedure must be validated or verified in accordance with the latest edition of the pharmacopoeia. Some review articles on the general validation methods have been published by the author. This present review will focus on the implementation and discussion of the accuracy and precision evaluation based on the current USP and Indonesian pharmacopoeia. Some examples …

Variation Sources Analysis And Monitoring Of Measurement System Of Food Packaging Paper Based On Hs Gc/Ms, Zhao Hai-Juan, Li Wen-Wei, Wagn Hui, Du Shan-Tao, Wang Hai-Yu, Li Chun-Yang

Food and Machinery

Objective: To improve the accuracy and validity of the measurement data of solvent residues in food packaging paper. Methods: Taking the HS GC-MS measurement system as the research object, variation sources in the measurement process was separated by using the measurement system analysis, and the traditional control chart and EWMA control chart of repeatability and reproducibility were established respectively to effectively monitor the detection error of the measurement system. Results: ① HS GC/MS had high measurement accuracy, with GRR of about 9.76%, and the gauging ability of the measurement system was relatively good. ② Through the combination …

Freely Chosen Cadence Is Increased During Repeated Bouts Of Submaximal Ergometer Pedalling, Andreas Schmidt, Jonas G. Madsen, Magnus K. Hyttel, Ernst A. Hansen

International Journal of Exercise Science

International Journal of Exercise Science 15(1): 1142-1155, 2022. It was investigated whether the phenomenon of repeated bout rate enhancement occurs during submaximal ergometer cycling. Repeated bout rate enhancement is defined as an increase of the freely, or spontaneously, chosen cadence during repeated bouts of pedalling and has previously been reported for finger tapping. This is relevant to study since cadence can affect biomechanical and physiological responses. Recreationally active individuals (n=27) performed five consecutive 5-min bouts of cycling at 100 W using freely chosen cadence. All bouts were separated by 10-min rest. Cadence, pedal force profile characteristics, heart rate, …

Sensitive And Reliable Measures Of Driver Performance In Simulated Motor-Racing, Christopher Irwin, Jamie Mollica, Ben Desbrow

International Journal of Exercise Science

International Journal of Exercise Science 12(6): 971-978, 2019. Motor racing is a physically and mentally demanding sport, associated with a high degree of risk for drivers. Hence, driving simulation provides a safe alternative to explore the impact acute physiological perturbations (e.g. heat stress or dehydration) on a driver’s performance. This study aimed to determine sensitive and reliable simulated driving performance parameters that could be employed in future driving performance studies. Thirty-six healthy males (age: 26.5 ± 8.1 y, body mass: 75.6 ± 12.2 kg, mean ± SD) completed a single experimental trial involving four simulated motor-racing drives (2 initial drives …

Fifty Years Of Cave Arthropod Sampling: Techniques And Best Practices, J. Judson Wynne, Francis G. Howarth, Stefan Sommer, Brett G. Dickson

International Journal of Speleology

Ever-increasing human pressures on cave biodiversity have amplified the need for systematic, repeatable, and intensive surveys of cave-dwelling arthropods to formulate evidence-based management decisions. We examined 110 papers (from 1967 to 2018) to: (i) understand how cave-dwelling invertebrates have been sampled; (ii) provide a summary of techniques most commonly applied and appropriateness of these techniques, and; (iii) make recommendations for sampling design improvement. Of the studies reviewed, over half (56) were biological inventories, 43 ecologically focused, seven were techniques papers, and four were conservation studies. Nearly one-half (48) of the papers applied systematic techniques. Few papers (24) provided enough information …

Estimates Of Genetic Parameters For Racing Times Of Thoroughbred Horses, Bülent Eki̇z, Ömür Koçak

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to estimate the genetic parameters for racing times, which are needed for a selection program of Thoroughbred horses in Turkey. The racing records used in the study were obtained from the Turkish Jockey Club. The trait used in the study was racing time for racing distances of 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2100, 2200, and 2400 m. The data from each racing distance were analyzed separately. Genetic parameters were estimated by REML procedure using the DFREML program. Estimates of heritability ranged from 0.177 to 0.353, depending on the racing distance. …

Calculation Of Adjustment Factors For Standardizing Lactations To Mature Age And 305-Day And Estimation Of Heritability And Repeatability Of Standardized Milk Yield Of Simmental Cattle Reared On Kazova State Farm, Süleyman Çi̇lek, Mehmet Emi̇n Teki̇n

Turkish Journal of Veterinary & Animal Sciences

Adjustment factors of lactation milk yield to mature age and 305-day were calculated and heritability and repeatability of milk yield were estimated for Simmental cows reared on Kazova State Farm. A total of 1549 lactation records of Simmental cows reared on Kazova State Farm between 1992 and 2002 were used. The factors for standardizing incomplete lactations to 305-day were estimated by taking 7 calving age groups into consideration (2, 3, 4, 5, 6-8, 9 and 10 years of age and older). The factors for standardizing to mature equivalent estimated by polynomial regression are between the 24^th and 143^rd month and …

Estimates Of Genetic Parameters For Racing Performances Of Arabian Horses, Bülent Eki̇z, Ömür Koçak, Hidir Demi̇r

Turkish Journal of Veterinary & Animal Sciences

The aims of the study were to investigate the effects of the type of track, age, sex and origin of horse on racing time for Arabian horses, and to estimate the genetic parameters for racing time. The racing records used in this study were obtained from the Turkish Jockey Club. The trait used in the study was racing time for racing distances of 1200 m, 1300 m, 1400 m, 1500 m, 1600 m, 1800 m, 1900 m, 2000 m, 2100 m and 2200 m. The data from each racing distance were analysed separately. Genetic parameters were estimated by REML procedure …

Estimates Of Phenotypic And Genetic Parameters For Ewe Productivity Traits Of Turkish Merino (Karacabey Merino) Sheep, Bülent Eki̇z, Mustafa Özcan, Alper Yilmaz, Ayhan Ceyhan

Turkish Journal of Veterinary & Animal Sciences

The aims of the study were to investigate the fixed effects which are considered to influence ewe productivity and to estimate the genetic parameters for ewe productivity traits of Turkish Merino (Karacabey Merino) sheep. Genetic parameters were estimated by REML procedure using the DFREML program. The effects of year and age of ewe were significant for fertility, litter size at birth (LSB), litter size at weaning (LSW), litter weight at birth (LWB) and litter weight at weaning (LWW). The least squares means of fertility, LSB, LSW, LWB and LWW were 0.904, 1.422, 1.358, 6.689 kg and 41.577 kg, respectively. The …

Effect Of Certain Factors On Productive And Reproductive Efficiency Traits And Phenotypic Relationships Among These Traits And Repeatabilities In West Anatolian Holsteins, Mustafa Tekerli̇, Mustafa Gündoğan

Turkish Journal of Veterinary & Animal Sciences

The present investigation was undertaken to study certain factors affecting production efficiency, milk production and reproduction and to estimate the repeatabilities and phenotypic correlations of these traits in Holsteins maintained at different farms in western Anatolia over 3 years (1990 - 1993). The data consisted of 506 first and 232 second lactations of 525 cows. Three production efficiency traits (milk yield per day of lactation length (MYPDLL), milk yield per day of calving interval (MYPDCI) and milk yield per day of age at second calving (MYPDASC)), one production trait (lactation yield (LY)), and one reproduction trait (calving interval (CI)) were …

The Estimation Of Phenotypic And Genetic Parameters For Calf Birth Weight And Gestation Length Of Brown Swiss Cows Reared At The Bahri Dağdaş International Agricultural Research Institute, Muammer Ti̇lki̇, Şeref İnal, Mehmet Emi̇n Teki̇n, Mehmet Çolak

Turkish Journal of Veterinary & Animal Sciences

This study was carried out to estimate the phenotypic and genetic parameters for the gestation length and birth weight of Brown Swiss cattle reared at the Bahri Bağdaş International Agricultural Research Institute. The experimental material consisted of 891 calving records and 666 gestation length records between 1989 and 2000. The least-squares means of birth weight and gestation length were 35.6 kg and 284 days, respectively. Except for the effect of the dam's age on gestation length, all other factors investigated in this study had significant effects on both gestation length and birth weight (P < 0.05-0.001). The estimations of heritability and repeatability for birth weight were 0.10 and 0.15, respectively. Estimated repeatability for gestation length was 0.14.

Sources Of Variation And Repeatability For Litter Size, Body Weight And Matured Performance Of Awassi Ewes, Saad Ibrahim Said, M. M. Muwalla, J. P. Hanrahan

Turkish Journal of Veterinary & Animal Sciences

The objectives of this study were to investigate the environmental factors influencing litter size and postpartum ewe live weight and to estimate the repeatability for these traits and for pre-weaning growth rate in Awassi breed. Least squares means for litter size and ewe body weight were 1.08 and 57.6 kg, respectively. Repeatability estimated by the intraclass correlation method was 0.03, 0.46 and 0.26 for litter size, ewe body weight and pre-weaning growth rate, respectively. Year-month and age of ewe showed highly significant effect on all the traits. It was concluded that selection for litter size should be based not only …

Coal Mineral Analysis: A Check On Inter-Laboratory Agreement, G. S. Casuccio, F. A. Gruelich, G. Hamburg, F. E. Huggins, D. A. Nissen, J. M. Vleeskens

Scanning Microscopy

Four laboratories co-operated to test repeatibility and reproducibility of the semi-quantitive Coal Mineral Analysis (CMA) method. CMA is an instrumented image analysis method which identifies mineral particles in coal by chemical composition (energy dispersive X-ray spectroscopy) and size (scanning electron microscopy). The repeatability of weight percent data was better than 0.2 relative standard deviation for most minerals constituting more than five percent of all coal minerals. The type of mineral had no effect on repeatability. Errors arising from counting statistics were shown to be the major source of bias at a given instrument setting.

Inter-laboratory data for the major minerals …