Molecular characterization of guava Psidium guajava in Cereté, Córdoba, Colombia by Enrique PARDO, Karen HERNÁNDEZ, Teodora CAVADÍA

“…Nine microsatellites were amplified using the PCR Touchdown technique. Genetic-population parameters such as the number of alleles, effective number of alleles, observed heterozygosity, expected heterozygosity, fixation index, Hardy-Weinberg equilibrium, and polymorphic information content were calculated using PopGene 1.31 software. …”
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Comparison of muscle synergies for running between different foot strike patterns. by Koji Nishida, Shota Hagio, Benio Kibushi, Toshio Moritani, Motoki Kouzaki

“…However, some muscle weightings showed significant differences between FFS and RFS, especially the weightings of the tibialis anterior of the landing leg in synergies activated just before touchdown. The activation patterns of the synergies were also different for each foot strike pattern in terms of the timing, duration, and magnitude of the main peak of activity. …”
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A broad spectrum, one-step reverse-transcription PCR amplification of the neuraminidase gene from multiple subtypes of influenza A virus by Chen Wenbin, Virtue Elena, Lai Richard, Boyd Victoria, Brunck Marion EG, Alvarez Alejandra, Bletchly Cheryl, Heine Hans G, Barnard Ross

“…One-step RT-PCR testing was successful in 31/32 (97%) cases using a touchdown protocol with RNA from over 32 different cultured influenza A virus strains representing the 9 neuraminidase subtypes. …”
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Thrust Vectoring Control of a Novel Tilt-Rotor UAV Based on Backstepping Sliding Model Method by Zelong Yu, Jingjuan Zhang, Xueyun Wang

“…However, the high aspect ratio of blended wing body UAVs leads to a wingtip or oar-tip touchdown problem when adopting the conventional position-attitude control (CPAC) scheme with a large crosswind disturbance. …”
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A Review of Optimization Strategies and the Advantages and Disadvantages of using Polymerase Chain Reaction with Confronting Two-Pair primers (PCR-CTPP) in Genomics Studies by zeinab Jamshidi, kheirollah Yari

“…Conclusion: Strategies for optimizing the concentration ratio of internal and external primers, adding amplification additives to the PCR reaction mix, and use of the touchdown program are also recommended.…”
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A Runway Overrun Risk Assessment Model for Civil Aircraft Based on Quick Access Recorder Data by Xiuyi Li, Lin Zhang, Jiaxing Shang, Xiaoquan Li, Yu Qian, Linjiang Zheng

“…The results show that the automatic deceleration rate, the way that the aircraft approaches the runway, the touchdown distance, and the kinetic energy at 50 ft are key factors in the risk of runway overrun during the landing phase.…”
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A Rational Numerical Method for Simulation of Drop-Impact Dynamics of Oleo-Pneumatic Landing Gear by Rosario Pecora

“…Oleo-pneumatic landing gear is a complex mechanical system conceived to efficiently absorb and dissipate an aircraft’s kinetic energy at touchdown, thus reducing the impact load and acceleration transmitted to the airframe. …”
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Monitoring and Analysis of the Collapse Process in Blasting Demolition of Tall Reinforced Concrete Chimneys by Xiaowu Huang, Xianqi Xie, Jinshan Sun, Dongwang Zhong, Yingkang Yao, Shengwu Tu

“…In practical engineering, the control measures of chimney impact, blasting vibration, and collapse touchdown vibration should be fully strengthened to ensure the safety of the protection target around the blasting demolition object.…”
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Differences in sprinting performance and kinematics between preadolescent boys who are fore/mid and rear foot strikers. by Aya Miyamoto, Tomonari Takeshita, Toshio Yanagiya

“…Regarding the association between foot strike pattern and sprint kinematics, we found that the RF group had a greater range of knee flexion during the support-leg phase, whereas the FF/MF group had shorter horizontal distance from the heel of the support leg to the centre of mass at the touchdown, greater maximal knee flexion velocity during the swing-leg phase, and higher the maximum hip extension velocity during the support-leg phase. …”
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Polymorphism in Variable Number of Tandem Repeats of Dopamine D4 Gene is a Genetic Risk Factor in Attention Deficit Hyperactive Egyptian Children: Pilot Study by Ola Shahin, Nagwa A. Meguid, Omnia Raafat, Reham M. Dawood, Malak Doss, Noha G. Bader El Din, Mostafa K. El Awady

“…VNTR polymorphisms of the DRD4 gene were done by touchdown PCR program using exon 3–specific primers followed by agarose gel electrophoresis. …”
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Kinetics and Muscle Activity Patterns during Unweighting and Reloading Transition Phases in Running. by Patrick Sainton, Caroline Nicol, Jan Cabri, Joëlle Barthèlemy-Montfort, Pascale Chavet

“…These neural adjustments can be attributed in part to the lack of visual cues on the foot touchdown. These findings highlight both the rapidity and the complexity of the neuromechanical changes associated with LBPP-induced unweighting and reloading during running. …”
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Numerical simulation in time domain to study cross-flow VIV of catenary riser subject to vessel motion-induced oscillatory current by Kun Liu, Kunpeng Wang, Yihui Wang, Yulong Li

“…By analyzing the bending moment near the touchdown point, it is found that under the combination of the ocean current and oscillatory flow the vessel motion may decrease the VIV response, while increase the excited frequencies. …”
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Glyphosate-Based Herbicide Formulations with Greater Impact on Earthworms and Water Infiltration than Pure Glyphosate by Verena Brandmaier, Anna Altmanninger, Friedrich Leisch, Edith Gruber, Eszter Takács, Mária Mörtl, Szandra Klátyik, András Székács, Johann G. Zaller

“…Therefore, the cover crop <i>Sinapis alba</i> was grown in soils with either 3.0% or 4.1% soil organic matter content (SOM) and either sprayed with a GBH (Touchdown Quattro, Roundup PowerFlex, or Roundup LB Plus) or the respective glyphosate AI (diammonium-, potassium-, or isopropylamine-salt) or hand weeded (control). …”
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Task-Oriented Topology System Synthesis of Reconfigurable Legged Mobile Lander Integrating Active and Passive Metamorphoses by Youcheng Han, Ziyue Li, Gaohan Zhu, Weizhong Guo, Jianzhong Yang, Wei Liu

“…Compared with our preceding works, the adjusting mode with three rotations (3R) provides a totally novel exploration approach to geometrically matching and securely arriving at complex terrains dangerous to visit currently; the landing mode is redefined by two rotations one translation (2R1T), identical with the tried-and-tested Apollo and Chang’E landers to enhance survivability via reasonable touchdown buffering motion; roving mode also utilizes 2R1T motion for good motion and force properties. …”
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Effect of wearing medical protective masks on treadmill running performance in the postpandemic era: a randomised trial by I-Lin Wang, Yu Su, Shun Yao, Yu-Hong Jiang, Hao-Yu Li, Chien-Ying Lai

“…Conclusions Wearing a medical protective mask does not affect the joint angle and touchdown PVGRF of lower extremities during treadmill running while affected by running time and changed after 9 min-treadmill running. …”
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Can minimal running shoes imitate barefoot heel-toe running patterns? A comparison of lower leg kinematics by Tobias Hein, Stefan Grau

“…BF running revealed a flatter foot placement, a more plantar flexed ankle joint and less inverted rearfoot at touchdown compared to MRS running. Conclusion: BF running does not change the landing automatically to forefoot running, especially after a systematic exclusion of surface and other influencing factors. …”
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Asymmetry in Three-Dimensional Sprinting with and without Running-Specific Prostheses by Anna Lena Emonds, Katja Mombaur

“…We consider a pair of steps which is modeled as a multiphase problem with each step consisting of a flight, touchdown and single-leg contact phase. Each phase is described by its own set of differential equations. …”
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Gender differences in the preparation for take-off in elite long jumpers by Vassilios Panoutsakopoulos, Apostolos S. Theodorou, Georgios I. Papaiakovou

“…Differences between groups concerning performance, the touchdown on the board and the take-off parameters were examined using the Mann-Whitney U test. …”
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Preliminary Concept of an Unmanned Aerial Vehicle for Patrolling of Water Basins by Edyta ŁADYŻYŃSKA-KOZDRAŚ, Sylwester TUDRUJ, Barbara KOZŁOWSKA, Konrad KAMIENIECKI

“…In the event of a propulsion power loss, the UAV could automatically begin a low advance velocity flight to reduce the risk of UAV failure upon touchdown. This was how the objective of this work was identified: to study the design criteria and select the materials for the fabrication of the UAV. …”
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Outdoor Vision-and-Language Navigation Needs Object-Level Alignment by Yanjun Sun, Yue Qiu, Yoshimitsu Aoki, Hirokatsu Kataoka

“…Experimental results show our OAlM is a more object-focused model, and our approach outperforms all metrics on a challenging outdoor VLN Touchdown dataset, exceeding the baseline by 3.19% on task completion (TC). …”
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