Shorter Lag Time Research Articles

In situ measurement of localization error in particle tracking microrheology

A method is presented to estimate the static error 𝜖 in a multiple particle tracking microrheology experiment. This in situ estimate of 𝜖 is measured under the same conditions of the material under test, and without any additional experiments. The correction of the mean-squared displacement by the in situ method is potentially more reliable than methods that rely on characterizing 𝜖 in a separate gel sample. With the true mean-squared displacements accessible at short lag times, experimental artifacts introduced by static error can be distinguished from true rheological properties, even in highly viscous (>10,000 mPa⋅s) samples.

Lag times in the work disability process: Differences across diagnoses in the length of disability following work-related injury.

The amount of time between key points in the work disability and workers' compensation process, referred to as lag times, has been shown to relate to work disability outcomes but little research has examined how this finding may differ based on the diagnosis associated with the cause of work disability. To examine whether relationships between lag times in the work disability process and disability duration vary by diagnosis in a sample of workers' compensation claims. Using workers' compensation claims, Analysis of Covariance was used to estimate differences in disability duration across three lag times (days from the date of injury to: reporting the injury, seeking medical care, and starting lost work time paid by the workers' compensation insurer) and injury diagnosis groups (Work-related Musculoskeletal Disorders (WRMSD) and fractures). WRMSD tended to have longer lag times than fractures, whereas disability duration tended to be longer for fractures than WRMSD. Overall, shorter lag times were associated with shorter disability duration, but the relationships varied across diagnosis groups, and greater variation in disability duration was observed for WRMSD compared to fractures. The findings suggest the importance of responding to work-related injuries by reporting the injury, receiving medical care, and taking time off of work if necessary, in a timely fashion.

Survival kinetics of heat-stressed Escherichia coli O157:H7 and Listeria monocytogenes cells as post-fermentation contaminants in kefir during refrigerated storage

The survival kinetics of heat-adapted (43 °C 18 h, 45 °C 18 h) and heat-shocked (45 °C 2 h) Escherichia coli O157:H7 and Listeria monocytogenes cells inoculated into kefir was investigated during refrigerated storage. Inactivation data was analyzed using log-linear, log linear-shoulder, and Weibull models. The non-linear models fit better to obtained survival data. Survival curves of two pathogens that heat-adapted at 43 °C displayed downward concavity with a lag phase. Heat adaptation of L. monocytogenes at 43 °C resulted in 12 h shorter lag time but 76 h longer 4D reduction time, while those of E. coli O157:H7 displayed 59 h shorter lag time than controls. After heat shocking at 45 °C (2 h), 4D reduction time of E. coli O157:H7 was 17 h longer than control, whereas the survival curve of L. monocytogenes was concave upward with a 4D reduction time 93 h shorter than control. Heat adaptation at 45 °C for 18 h resulted in concave upward survival curves. The 4D reduction times of L. monocytogenes and E. coli O157:H7 were 73 and 85 h shorter than controls, respectively. In conclusion, the response of the cells to exposure elevated temperatures prior to inoculation into kefir affected the kinetics of the survival curves.

Effect of Differences in the Primary Structure of the A-Chain on the Aggregation of Insulin Fragments.

Bovine and human insulin have similar primary structures. In this article, the region of the insulin A-chain of bovine and human insulin where the amino acid composition is different was studied. Bovine insulin fragment (BIF) and human insulin fragment (HIF) were synthesized in solid-phase peptide synthesis. The effects of pH, temperature, urea, ionic strength, and stirring on the formation of fibrils were studied using a fractional factorial resolution III experimental design. Fibrillation was monitored by fluorescence and infrared spectroscopy and optical microscopy. Both fragments formed fibrils at pH 1.6 and a temperature of 60 °C. The lag time and apparent aggregation growth rate constant were determined using a two-parameter kinetic model. It was found that the bovine insulin fragment has a shorter lag time than the human insulin one, whereas the exponential phase rate was faster for HIF than for BIF. An increase in β-sheets content with time was observed in both fragments. The increase in β-sheets was preceded by an initial decrease in α-helices followed by an intermediate increase during the transition from the lag phase to elongation phase. Temperature and ionic strength are among the most important experimental factors during the lag phase, whereas ionic strength is replaced by pH during the elongation phase for both the fragments. Congo red binding confirmed the presence of ringlike oligomer structures rich in antiparallel β-sheets, which tend to form fibrils rich in parallel β-sheets.

Development of an optimized broth enrichment culture medium for the isolation of Clostridium difficile

Clostridium difficile is a spore forming bacterium and the leading cause of colitis and antibiotic associated diarrhoea in the developed world. Effective recovery of spores, particularly in low numbers, is imperative to obtain accurate prevalence data, due to the low number of spores found within non-clinical samples (<20/ml). Through comparison of C. difficile enrichment media, this study showed the importance of selecting an effective enrichment media. Commonly used broths, such as Cooked Meat broth, promote significantly less growth than other available broths such as Brain Heart Infusion broth, BHI. The optimization of BHI using selective antibiotics, moxalactam and norfloxacin, and sodium taurocholate at a concentration of 0.4%, allowed for high growth rate (0.465 h-1), short lag times (<14 h) and recovery of spores at low concentrations. The optimized broth, designated BHIMN-T, out-performed other commonly used broths so can be recommended for future studies.

On the monetary impact of fashion design piracy

Whether to legally protect original fashion designs against piracy is an ongoing debate among legislators, industry groups, and legal academic circles, which has gained little exposure in the marketing literature. We combine data on the growth of fashion designs, price markups, and industry statistics to develop a formal analysis of the essential questions at the base of the debate. We distinguish between three effects: Acceleration, whereby the presence of a pirated design increases the awareness of the design; Substitution, which represents the loss of sales due to consumers who would have purchased the original design, yet instead buy the knockoff; and loss because of Overexposure of the design resulting from the design's ubiquity. Using data-driven simulation analysis, we find that for the items analyzed (handbags and apparel), overexposure emerged as having a stronger negative effect (on average) on the original's profitability than the positive effect of acceleration. Both effects are considerably larger than that of substitution. This result is of particular interest given that industry groups have consistently focused on the damage caused by substitution. We also show that the effect of a legally mandated postponement on the introduction of a knockoff is non-monotonic for short lag: A short time lag may not affect the original design's NPV, and in fact may even damage it. For the ranges we analyzed, the positive effect of the protection period is observed primarily for time lags of over one year.

Teleconnection of rainfall time series in the central Nile Basin with sea surface temperature

We investigated teleconnections of rainfall time series in the central Nile Basin (Sudan and South Sudan) with localities in the global sea surface temperature (SST) field, using monthly rainfall data from 11 gauging stations from 1960 to 1999. Annual rainfall ranged from 100 mm in the north to more than 700 mm in the south, and all stations had a strong contrast between rainy and dry seasons with rainless dry periods of several months. Rainfall time series at the stations were categorized as strongly seasonal, with precipitation concentration index exceeding 16 and seasonality index exceeding 0.9. The rainfall stations were classified into four zones on the basis of annual rainfall, seasonality, and cross-correlations among the stations. We calculated cross-correlations of interannual rainfall time series in summer (July and August) with the global SST field. For short lag times (0 or 1 month), summer rainfall in Zones I and II (northern arid regions) had significant correlations with SST over the eastern Mediterranean Sea and southern Indian Ocean, summer rainfall in Zone III (semiarid region) had significant negative correlations with SST over the Indian Ocean, and summer rainfall in Zone IV (southern wet region) had significant correlations with SST over tropical areas and the southwestern Pacific Ocean. For long lag times (3–6 months), Nile Basin summer rainfall time series had significant correlations with SST in various regions of the Atlantic and Indian Oceans but not the Pacific Ocean. Rainfall in Zones I and II had positive correlations (significance level 0.70).

Short-term effects of particulate matter in metro cabin on heart rate variability in young healthy adults: Impacts of particle size and source

BackgroundMetro system has become popular in urban areas. However, short-term effects of size-fractionated particulate matter (PM) on cardiac autonomic function in metro system remain unexplored. ObjectivesTo explore the contribution of ambient PM to in-cabin PM and investigate the short-term effects of exposure to size-fractionated PM and black carbon (BC) in metro system on cardiac autonomic function in young healthy adults. MethodsThirty nine young healthy adults were asked to travel in metro system during 9:00–13:00 on a weekends between March and May 2017. We performed continuous ambulatory electrocardiogram monitoring for each of them, and measured real-time size-fractionated PM, BC, nitrogen dioxide, nitric oxide, carbon dioxide, ozone, noise, temperature and relative humidity in metro cabin. We also collected the data of ambient PM2.5 (aerodynamic diameter < 2.5 µm) concentrations in Beijing. Linear regression model was used to estimate the infiltration factor of ambient PM2.5 to assess the relationship between metro cabin PM and ambient PM. Mixed-effects model was used to estimate the associations between changes in HRV parameters and PM0.5 (aerodynamic diameter < 0.5 µm), PM0.5–2.5 (aerodynamic diameter between 0.5 µm and 2.5 µm), PM2.5–10 (aerodynamic diameter between 2.5 µm and 10 µm), and BC, respectively. ResultsWe found that size-fractionated PM in metro systems were significantly associated with HRV parameters. Per IQR (interquartile range) increase in PM0.5 (1.6*107/m3) in 1-h moving average concentration was associated with a 13.96% (95% CI: − 18.99%, − 8.61%) decrease in SDNN (standard deviation of normal-to-normal intervals). Similar inverse associations were found between size-fractionated PM exposure and LF (low frequency power), HF (high frequency power), respectively, and smaller particles had greater effects on HRV parameters at shorter lag time. Sex of participants modified the adverse associations between size-fractionated PM and HRV. An IQR of 1-h PM0.5 increasing was associated with a decrease of 6.05% (95% CI: − 22.87%, − 14.44%) in males and a 34.87% (95% CI: − 49.59%, − 15.85%) in females in LF (P for interaction = 0.026). The infiltration factor of ambient PM2.5 was 0.39 (95% CI: 0.33, 0.45). It is estimated that PM2.5 originated from ambient air may account for 20.2% of the PM measured in metro cabin. Per IQR increase in BC (5.5 μg/m3) in 5-min, 1-h, and 2-h moving averages, a primary tracer for ambient PM from combustion source, was associated with decreases of 0.84% (95% CI: − 1.20%, − 0.47%), 2.22% (95% CI: − 3.20%, − 1.22%), and 4.44% (95% CI: − 6.28%, − 2.56%) in SDNN, respectively. ConclusionsShort-term exposure to PM may disturb metro commuter's cardiac autonomic function, and the potential effects depend on the size of PM and the sex of commuters. Ambient PM from combustion source may have adverse effects on the cardiac autonomic function of passengers in cabin.

Job engagement in higher education

PurposeEmployees’ job engagement is a key driver for organizational success and competitive advantage. Based on Kahn’s engagement theory and social exchange theory, the purpose of this paper is to examine the relationships between job engagement, transformational leadership, high-performance human resource (HR) practices, climate for innovation, and contextual performance.Design/methodology/approachA questionnaire survey, conducted at two different points in time, was employed to collect data from 394 pairs of Vietnamese university academics and their leaders. Data were analyzed by structural equation modeling (SEM) and multilevel SEM using the Statistical Package for Social Science Version 24 and Mplus Version 7.4.FindingsThe findings indicated that transformational leadership and high-performance HR practices were key drivers of employees’ job engagement. A climate for innovation contributed effectively to mediate the effect of transformational leadership on employees’ job engagement. Further, employees’ job engagement was positively and significantly related to contextual performance.Research limitations/implicationsThe short time lag between the two data collection phases might limit the ability to reach definite causal conclusions. Future research using a longitudinal design is needed to provide stronger validation for the underlying model.Originality/valueThis study is a rare attempt that investigates the process from which employees’ job engagement is generated and contributes to improve contextual performance in the higher education sector.

Immobilization of Saccharomyces cerevisiae on nylon-6 nanofibrous membranes for grape juice fermentation

Nylon-6 nanofibrous membranes (NFM) prepared by electrospinning have been used as solid state support for the immobilization of the yeast Saccharomyces cerevisiae and then applied for the fermentation of grape juice. The membranes were characterized by scanning electron microscopy. The resulting metabolic activity was characterized by microcalorimetry. Sugar and ethanol changes during fermentation were monitored by HPLC. The results showed that the fermentation performance of immobilized yeasts on NFM is equal or even superior to the traditional fermentation process with yeasts freely dispersed in the medium. From calorimetry, free and immobilized yeasts showed the same enthalpy value in model solution, regardless to the amount of yeast loaded (52.2 ± 5.9 kJ mol−1 of glucose). Instead, immobilization of yeasts resulted in shorter lag time. Moreover, the maximum growth rate of immobilized yeasts was the same as with free yeasts in model solutions. However, the growth rate of immobilized yeasts was even higher, when performed in grape juice. In addition, the immobilization of yeasts on NFM exhibits the evident possibility of multiple reuse. Three consecutive fermentations were performed without significant loss of the overall performance. These findings support the development of nanostructured solid support for biocatalytic processes like fermentation of alcoholic beverages.

Comparing SAR-Based Short Time-Lag Cross Correlation and Doppler-Derived Sea Ice Drift Velocities

This paper shows initial results from estimating Doppler radial surface velocities (RVLs) over Arctic sea ice using the Sentinel-1A (S1A) satellite. Our study presents the first quantitative comparison between ice drift derived from the Doppler shifts and drift derived using time-series methods over comparable time scales. We compare the Doppler-derived ice velocities with global positioning system tracks from a drifting ice station as well as vector fields derived using traditional cross correlation between a pair of S1A and Radarsat-2 images with a time lag of only 25 min. A strategy is provided for precise calibration of the Doppler values in the context of the S1A level-2 ocean RVL product. When comparing the two methods, root-mean-squared errors (RMSEs) of 7 cm/s were found for the extra wide (EW4) and EW5 swaths, while the highest RMSE of 32 cm/s was obtained for the EW1 swath. Though the agreement is not perfect, our experiment demonstrates that the Doppler technique is capable of measuring a signal from the ice if the ice is fast moving. However, for typical ice speeds, the uncertainties quickly grow beyond the speeds we are trying to measure. Finally, we show how the application of an antenna pattern correction reduces a bias in the estimated Doppler offsets.

Carrying Capacity and Colonization Dynamics of Curvibacter in the Hydra Host Habitat

Most eukaryotic species are colonized by a microbial community – the microbiota – that is acquired during early life stages and is critical to host development and health. Much research has focused on the microbiota biodiversity during the host life, however, empirical data on the basic ecological principles that govern microbiota assembly is lacking. Here we quantify the contribution of colonizer order, arrival time and colonization history to microbiota assembly on a host. We established the freshwater polyp Hydra vulgaris and its dominant colonizer Curvibacter as a model system that enables the visualization and quantification of colonizer population size at the single cell resolution, in vivo, in real time. We estimate the carrying capacity of a single Hydra polyp as 2 × 105 Curvibacter cells, which is robust among individuals and time. Colonization experiments reveal a clear priority effect of first colonizers that depends on arrival time and colonization history. First arriving colonizers achieve a numerical advantage over secondary colonizers within a short time lag of 24 h. Furthermore, colonizers primed for the Hydra habitat achieve a numerical advantage in the absence of a time lag. These results follow the theoretical expectations for any bacterial habitat with a finite carrying capacity. Thus, Hydra colonization and succession processes are largely determined by the habitat occupancy over time and Curvibacter colonization history. Our experiments provide empirical data on the basic steps of host-associated microbiota establishment – the colonization stage. The presented approach supplies a framework for studying habitat characteristics and colonization dynamics within the host–microbe setting.

Thermal and moisture monitoring of an internally insulated historic brick wall

Internally insulating walls is an effective method of energy retrofitting buildings. However insulation changes the hygric behaviour of a wall and can increase the risk of wall decay by moisture accumulation. This paper investigates thermal and moisture behaviour of internal insulations applied to a brick wall over a two and a half year period with probes positioned near the interface between the leveling plaster and brick wall.The in-situ performance of the insulations agrees with their laboratory measured thermal and moisture properties. It is consistently evidenced that the vapour permeability of the insulation has a large impact on the wall moisture. Walls with vapour permeable insulations closely reflect internal room relative humidity (RH) conditions and show the greatest response and the shortest lag time in reflecting changes in room RH. Conversely, the walls with low vapour permeable insulations display lower RH fluctuations and longer lag periods as moisture movement is impeded. There is a reduction in the wall's RH for all insulations when room heating is applied with the walls with vapour permeable insulations showing the largest reduction in RH due to wall moisture drying and raising wall temperatures while the less vapour permeable insulation lowered RH mostly on account of rising wall temperatures. The results suggest that vapour permeable insulations are suitable in moisture environments with periods of low RH that provide the wall with an opportunity to dry. The thermal performance of an insulation must be counterbalanced against moisture performance and the resultant longterm durability of the building.

Delay in catchment nitrogen load to streams following restrictions on fertilizer application

A MIKE SHE hydrological-solute transport model including nitrate reduction is employed to evaluate the delayed response in nitrogen loads in catchment streams following the implementation of nitrogen mitigation measures since the 1980s. The nitrate transport lag times between the root zone and the streams for the period 1950–2011 were simulated for two catchments in Denmark and compared with observational data. Results include nitrogen concentration and mass discharge to streams. By automated baseflow separation, stream discharge was separated into baseflow and drain flow components, and the nitrogen concentration and mass discharge in baseflow and drain flow were determined. This provided insight on the development of stream nitrogen loads, with a short average lag time in drain flow and a long average lag time in baseflow. The long term effect of nitrogen mitigation measures was determined, with results showing that there is a 15 years long delay in the appearance of peak nitrogen loads in streams. This means that real time stream monitoring data cannot be used alone to assess the effect of nitrogen mitigation measures.

Big Data analytics for forecasting tourism destination arrivals with the applied Vector Autoregression model

The prediction of tourist numbers is important for Destination Management and Marketing. While most existing methods rely on well-structured statistical data, using web search queries of the destination to forecast its tourist arrivals is a new way to apply Big Data analytics. However, there are no studies exploring correlation of weather, temperatures, weekends and public holidays with tourism destination arrivals and web search queries of the destination, respectively. This study uses the Vector Autoregressive modeling to examine the Granger causality between actual arrivals of the studied cultural tourism destination and its web search queries, and to explore the correlation mentioned above. The striking result is that weather has no correlation either with actual arrivals of the studied cultural tourism destination, or with its web search queries. Meanwhile, unlike previous researchers who discuss the predictive power of web queries on actual tourism flows, this study emphasizes their reciprocal predictive powers upon each other. The originality of this study is exemplifying the utilization of Big Data analytics in the tourism domain with Big Data datasets, data capture techniques, analytical tools, and analysis results. This study further digs possible reasons for an identified short time lag length (p = 2), to provide insights for Destination Management and Marketing.

Evaluating the utility of solar-induced chlorophyll fluorescence for drought monitoring by comparison with NDVI derived from wheat canopy

Normalized Difference Vegetation Index (NDVI) has been extensively used in continuous and long-term drought monitoring over large-scale, but with late response to drought-related changes of photosynthesis. Instead, solar-induced chlorophyll fluorescence (SIF) is more closely related to photosynthesis and thus is proposed to track the impacts of drought on vegetation growth. However, the detailed difference between SIF and NDVI in responding to drought has not been thoroughly explored. Here we present continuous ground measurements of NDVI and SIF at 760nm over four plots of wheat with different intensities of drought (well-watered treatment, moderate drought, severe drought and extreme drought). The average values of seasonal SIF were significantly lower under severe drought and extreme drought, while NDVI means only showed significant reduction in extreme drought. In the seasonal patterns, daily SIF could clearly separate the difference of drought gradient, while the difference of daily NDVI was clearer in the end of the field campaign. Daily SIF also significantly and positively correlated with soil moisture, indicating that SIF could be considered as an estimator of soil moisture to detect the information about agricultural drought. Furthermore, in extreme drought plot, the correlation of SIF and soil moisture was higher than that of NDVI and soil moisture in a shorter time lag (<15-day) but weaker in a longer time lag (longer than 30-day). The relationships of growth parameters with SIF and NDVI were further analyzed, showing a saturation of NDVI and unsaturation of SIF at high values of leaf area index and relative water content. These results suggested that SIF is better fit in early drought monitoring, especially over closure canopy, while NDVI is more feasible when drought lasted over a long time scale. Our findings in the study might provide deep insight into the utility of SIF in drought monitoring.

The Role of Bolus Injection of Saline with Arm Elevation on Rocuronium onset Time: A Randomized Control Study.

Background:The onset time of neuromuscular blockade is a crucial time associated with the risk of hypoxia and pulmonary aspiration. Various strategies have been undertaken to shorten this onset time. Therefore, we investigated the effects of bolus of 20 ml saline followed by limb elevation after administration of rocuronium in a dose of 0.6 mg/kg to study the onset time.Methodology:Thirty patients were randomly allocated to the bolus saline group or control group. General anesthesia was induced and maintained with fentanyl and propofol. Rocuronium 0.6 mg/kg intravenous (IV) was administered followed by 20 ml saline bolus and limb elevation in the study group compared to administration of 0.6 mg/kg in a running drip only in the control. Onset of neuromuscular block was assessed by acceleromyography at the adductor pollicis muscle with train-of-four stimulation.Results:The lag time was shorter in bolus group (34 s median) than in control group (45 s median), P < 0.017. The onset time was shorter in bolus group (55 s median) than in control group (110 s median), P < 0.001. The T1 recovery to 25% was longer in bolus group (42 min median) than in control group (39 min median) which was statistically not significant.Conclusion:Rocuronium 0.6 mg/kg IV followed by bolus 20 ml saline and concomitant limb elevation resulted in shorter lag time, faster onset of neuromuscular blockade, good intubating conditions without prolonging clinical duration of action when compared to the control.

Observing and modeling the poloidal and toroidal fields of the solar dynamo

Context. The solar dynamo consists of a process that converts poloidal magnetic field to toroidal magnetic field followed by a process that creates new poloidal field from the toroidal field. Aims. Our aim is to observe the poloidal and toroidal fields relevant to the global solar dynamo and to see if their evolution is captured by a Babcock-Leighton dynamo. Methods. We used synoptic maps of the surface radial field from the KPNSO/VT and SOLIS observatories, to construct the poloidal field as a function of time and latitude; we also used full disk images from Wilcox Solar Observatory and SOHO/MDI to infer the longitudinally averaged surface azimuthal field. We show that the latter is consistent with an estimate of the longitudinally averaged surface azimuthal field due to flux emergence and therefore is closely related to the subsurface toroidal field. Results. We present maps of the poloidal and toroidal magnetic fields of the global solar dynamo. The longitude-averaged azimuthal field observed at the surface results from flux emergence. At high latitudes this component follows the radial component of the polar fields with a short time lag of between 1−3 years. The lag increases at lower latitudes. The observed evolution of the poloidal and toroidal magnetic fields is described by the (updated) Babcock-Leighton dynamo model.

ADMINISTRATIVE DATA AND MODEL BASED ESTIMATION IN ITALIAN AGRICULTURE STATISTICS

Actually, agricultural surfaces are estimated by the Italian National Statistical Institute (ISTAT) through experts evaluations. The present work has two purposes: 1) to improve the use of administrative data for increasing reliability of crop statistics; 2) to improve methodology for releasing crop early estimates. IACS administrative data are available within a short time lag, cover all the main crops and may substitute estimates gradually. As regards early estimates, the usual design based estimation strategy may be improved through double sampling and model based regression. Results show good reliability of administrative data and decrease of estimates variances using model based estimation.

Impact of broad-based terraces on water and sediment losses in no-till (paired zero-order) catchments in southern Brazil

Soil degradation is a widespread problem and currently one of the biggest challenges in modern-day agriculture. The partial adoption of conservation agriculture, such as no-till management, does not provide adequate erosion control, and the hydrology dynamics on hillslopes under no-till management remain poorly quantified. This study examines the hydrology of agricultural hillslopes under no-till management, with and without terraces in southern Brazil. Water and soil losses were measured in two paired, zero-order catchments (2.4 ha) under no-till cultivation, with and without broad-based retention terraces. Rainfall, surface runoff, and suspended sediment concentrations were monitored during major rainfall events. Analysis of hydrographs and sedigraphs was used to derive the peak flow, runoff duration, and sediment yield values and the hysteresis between surface runoff and the suspended sediment concentration during different seasons. The results show higher soil and water losses in the catchment without terraces. Terracing reduced peak flow rates by 79%, sediment yield from 0.44 to 0.16 t ha−1, and the total surface runoff from 3943 (126 mm) to 855 m3 (36 mm) during 31 events over 16 months. The no-till system without terraces was unable to adequately control surface runoff and soil erosion. Surface runoff and sediment yield were higher under no-till without terraces than under no-till with terraces. The difference in terms of surface runoff volume and sediment yield indicates an important difference in the hydrology and soil erosion in the catchment without terraces, which is represented by high-surface-runoff coefficient values observed during the rainfall-runoff events. The short lag time and steep rising limb of the hydrographs indicate high-surface-runoff responsivity to rainfall in no-till without terraces.