Greater Displacement Research Articles

Using a three-dimensional model of the Ankle-Foot Orthosis/leg to explore the effects of combinations of axis misalignments.

Misaligning the mechanical axes of Ankle-Foot Orthoses with the ankle axis may lead to tissue damage, reduced gait efficiency, and mechanical wear on the orthosis. Previous models developed to describe the consequences of joint misalignments have only been applied to the sagittal plane. In this study, a previously developed three-dimensional model of the Ankle-Foot Orthosis/leg system was used to determine the effects of misalignments in the frontal and transverse planes and how they interact with misalignments in the sagittal plane. The motion of two corresponding points on the leg and Ankle-Foot Orthosis was calculated for different binary combinations of translational and rotational misalignments of the mechanical axis, and the resulting displacements between those points recorded. Misaligning the mechanical joint axis of the Ankle-Foot Orthosis in the transverse plane led to much greater displacements than other misalignments. Results from the model suggest the importance of prioritizing transverse plane alignment by appropriately accounting for tibial rotation. Misalignments in the transverse plane had a dominating effect on relative motion between the Ankle-Foot Orthosis and leg emphasizing the importance of including the third dimension in the model and prioritizing accuracy of alignment in the transverse plane.

Récupération de la sensibilité dentaire maxillaire après ostéotomie de Le Fort I

Upper alveolar nerves, when injured during Le Fort I osteotomies, alter maxillary tooth sensitivity. We had for aim to analyze post-operative maxillary tooth sensitivity recovery. We conducted a prospective study in a series of patients having undergone Le Fort I osteotomy, with, or without mandibular osteotomy or intermaxillary disjunction (IMD). The direction and range of displacement of the maxillary bone were recorded. One tooth in each alveolar sector (incisivocanine, premolar, molar) was tested with an electric stimulator for each patient. The tests were performed before (D-1), and after surgery (D2 or day+2, D+15, M2 (or month +2), M3, and M6). Twenty-two patients were included. Among the tested teeth, 91.9 % were sensitive at D-1. At D2, only 12.7 % of teeth were sensitive. At D15, M2, M3, and M6, the sensitivity was respectively 33.3 %, 43.1 %, 50 %, and 61.8 %. The recovery of sensitivity was faster in young patients (under 35 years of age) and for upper middle and superior alveolar nerves. There was no difference regarding the direction of maxillary movement. Among the teeth that were sensitive before surgery, 87.3 % had not regained sensitivity at D2. The recovery of sensitivity increased at D15. A great displacement of the maxillary bone was an aggravating factor for loss of tooth sensitivity.

Impact of shield tunneling on adjacent spread foundation on sandy cobble strata

The section of shield tunnel of the Chengdu Metro line passes primarily through sandy cobble strata. There are many buildings with spread foundations along the lines. Shield tunnel construction will disturb the ground, causing displacement or stress to adjacent spread foundations. Based on the similarity theory, a laboratory model test of shield tunnel driving was carried out to study the influence of shield tunnel excavation on the displacement of adjacent spread foundation. The results show that foundation closer to the tunnel has greater displacement or settlement than that further away. The horizontal displacement is small and is influenced greatly by the cutting face. The displacement along the machine driving direction is bigger and is significantly affected by the thrust force. Settlement occurs primarily when shield machine passes close to the foundation and is the greatest at that time. Uneven settlement at the bottom of the spread foundation reaches a maximum after the excavation ends. In a numerical simulation, a particle flow model was constructed to study the impact of shield tunnel excavation on the stresses in the ground. The model showed stress concentration at the bottom of the spread foundation. With the increasing ground loss ratio, a loose area appears in the tunnel dome where the contact force dropped. Above the loose area, the contact force increases, forming an arch-shaped soil area which prevents the loose area from expanding to the ground surface. The excavation also changed the pressure distribution around spread foundation.

High-displacement flexible Shape Memory Alloy actuator for soft wearable robots

This paper describes a flexible Shape Memory Alloy (SMA) actuator designed to increase the limited displacement that these alloys can induce. The SMA actuator has been designed so that it can be bent up to about 180°, providing more freedom of movements and a better integration in wearable robots, specially in soft wearable robots, than standard rigid solutions. Although the actuator length is relatively short, this original design allows a great linear displacement, because it can have one or more loops of the same SMA wire inside the actuator. This implies that the length of the SMA wire is at least two times greater than the length of the actuator. The adopted strategy for both position and speed control that overcomes the hysteresis and prevents overheating the actuator is also described. The control algorithm has been implemented in a rapid control prototyping (RCP) system based on a low cost hardware platform. Finally, the application of this novel actuator in a wrist exoskeleton prototype is shown to demonstrate the feasibility of using the flexible SMA actuator in a real soft wearable robot.

In the Name of the Caliph and the Nation: The Sheikh Ubeidullah Rebellion of 1880–81

Under the leadership of Sheikh Ubeidullah of Nehri, in the last months of 1880 tens of thousands of Iranian and Ottoman Kurds marched on northwestern Iran and temporarily took control of several cities. This movement, coupled with the response of the Iranian army, resulted in great violence and displacement. Despite its failure, in the limited literature on Kurds this revolt is seen as the birth of Kurdish nationalism. Using extensive and underutilized historical documents—including official correspondence from Iranian and Ottoman authorities as well as British consuls, and day-to-day reports and memoirs from American missionaries active in the region—this project suggests that Sultan Abdulhamid's (Sunni) pan-Islamist agenda, Shi'i–Sunni tensions, the rise of Armenian nationalism, and missionary activities in the region also played significant roles in the formation of this movement.

Damping characteristics of a reentry vehicle at hypersonic velocities

The experimental equipment, model, test conditions, and methods used for determining the streamwise damping on a setup with free oscillations on rolling bearings are described. Characteristics of aerodynamic damping of the model with two positions of the rotation axis and Mach numbers M∞ = 2, 4, and 6 are measured. Irregular oscillations of the model with a greater displacement of the rotation axis with respect to the longitudinal axis are found to arise at M∞ = 2.

High-pressure synthesis, structure, phase relation of polar LiNbO3-type ZnTiO3

Ferroelectricity, piezoelectricity, pyroelectricity, and second-order nonlinear optical behavior are technologically important. Because these properties are attributable to the noncentrosymmetric (NCS) structure[1], the search for materials exhibiting such characteristics must begin with a search of NCS materials. Among them, LiNbO3-type (LN-type) compounds with a chemical formula of ABX3 exhibit NSC structures with hexagonal polar space group R3c whose BX6 octahedra three-dimensionally share their corners the same as perovskite-type compounds[2]. In LN-type compounds, the A cation - B cation repulsion directs the spontaneous polarization along c-axis(Fig. 1). Therefore, we might find attractive functional properties by the selection of constituent ions based on their having a naturally occurring polar LN-type structure attributable to the cation-cation repulsion. With the ideas mentioned above, we have investigated the high-pressure synthesis and characterization of novel LN-type oxides such as ZnSnO3, PbNiO3, CdPbO3 as well as known MnMO3 (M = Ti, Sn). Recently, we have successfully synthesized a polar LN-type titanate ZnTiO3 (LN-ZTO) under high pressure and high temperature [3]. The first principles calculation indicates that LN-ZTO is a meta-stable phase obtained by the transformation in the decompression process from the perovskite-type phase, which is stable at high pressure and high temperature. The Rietveld structural refinement reveals that LN-ZTO exhibits greater intra-distortion of the TiO6 in LN-ZTO than that of the SnO6 in LN-type ZnSnO3 (LN-ZSO). The estimated spontaneous polarization are greater than those of LN-ZSO, which is attributed to the great displacement of Ti along c-axis and the greater Born effective charge of Ti (+6.1) than that of Sn (+4.1). Furthermore, the spontaneous polarization of LN-ZTO is greater than that of LiNbO3, indicating that LN-ZTO, like LiNbO3, is a candidate ferroelectric material with high performance. The second harmonic generation (SHG) response of LN-ZTO is 24 times greater than that of LN-ZSO. The findings indicate that the intra-octahedral distortion, spontaneous polarization, and SHG response are caused by the stabilization of the polar LN-type structure and reinforced by the second-order Jahn-Teller effect attributable to the orbital interaction between oxygen ions and d0 ions such as Ti4+. We also discuss the relationship between the intra-distortion of BO6 and polarity in several LN-type oxides.

LOW DENSITY POLYETHYLENE (LDPE) NANOCOMPOSITES WITH PASSIVE AND ACTIVE BARRIER PROPERTIES

Nanocomposites based on Low Density Polyethylene (LDPE) containing organically modified montmorillonite (OMMT) and polyethylene grafted with maleic anhydride (PE-g-MA) were obtained by the mixing molten state method at 130 °C (LDPE / PE-g-MA / Cv / OMMT). Furthermore, in order to obtain a material with active barrier properties, carvacrol (Cv) was incorporated into the nanocomposite (LDPE / PE-g-MA / Cv / OMMT). Carvacrol is an essential oil component with a high antimicrobial, antifungal, and antiparasitic capability. The nanocomposites were characterized by XRD, DSC, TGA, oxygen permeability, and tensile test. The nanocomposites without Cv (LDPE / PE-g-MA / OMMT) showed an intercalated morphology (confirmed by the X ray diffraction analysis), an improved percentage of crystallinity and a reduced permeability to oxygen (25%) as compared with LDPE . The rigidity of the resulting material correlated with the clay content as expected. The nanocomposite containing Cv (LDPE / PE-g-MA / Cv / OMMT) also show intercalated morphology with a greater displacement between the clay layers as compared with the nanocomposite without Cv produced by intercalation of the antimicrobial agent between the layers. The antimicrobial activity of (LDPE / PE-g-MA / Cv / OMMT) was observed by the reduction or inhibition on bacterial (Escherichia coli and Staphylococcus aureus) growth.

Study of Molecular Dynamics Collision Cascades in 1000 Random Directions in Crystal Fe(90%)Cr(10%) in the Energy Range 0.1 to 5 KeV

A statistical analysis of collision cascades caused by 1000 randomly directed energetic primary knock-on atoms (PKAs) using molecular dynamics (MD) simulations in crystal Fe(90%)Cr(10%) is presented. An Fe atom is chosen as the PKA in the energy range 0.1 to 5 keV. The standard deviation of the number of Frenkel pairs created during the collision cascade and range of the PKAs is presented. It is shown that the PKAs must be launched in ∼100 randomly chosen directions for the standard deviation to reach a steady value. For PKA energies ≥ 1 keV, 35% of secondary recoils have greater displacement than the PKAs. The results from the MD simulations for the number of displaced atoms are compared with those from the Norgett, Robinson, and Torrens model and other MD simulations of cascade damage in FeCr alloys.

Experimental investigation on the mechanical performance of starch–hemp composite materials

An experimental investigation was conducted in order to study the mechanical performance of starch–hemp composite materials. The starch–hemp composite material is 100% natural fibers and a durable material. The optimization of the binder solution has been based on the dynamical viscosity and the surface tension. The starch–hemp composite material specimens with five hemp/starch ratios, 6, 8, 10, 12 and 14, were manufactured by using the optimal binder. The density of the specimen decreases rapidly during the drying process. The duration of the drying time is between 30 and 40days. The density value is more lightweight than that of the lime hemp concrete. The experimental results show that the tensile strength varies from 0.03 to 0.08MPa, the elasticity modulus varies from 1.47 to 2.16MPa and the Poisson ratio varies from 0.08 to 0.12 when the hemp/starch ratio goes from 6 to 14. This type of natural fibers composite material shows a special property, great displacement. The appearance and propagation of the crack were shown and discussed in this paper.

Effect of Mandibular Tori on Glottic Exposure During Simulated Suspension Microlaryngoscopy

Mandibular tori have been identified as a contributing factor in difficult exposure during intubation. However, no investigation has measured the effect of mandibular tori on glottic exposure during suspension microlaryngoscopy (SML). The objective of this study was to measure how the size and location of mandibular tori affect glottic exposure during simulated SML at different thyromental distances. Suspension microlaryngoscopy was modeled on an anatomically accurate skull and larynx with thyromental distances between 6 and 12 cm. Mandibular tori were simulated by protruding screws 5 to 15 mm from the lingual aspect of the mandible. The tori were positioned either 15 mm (anterior) or 25 mm (posterior) from the midline of the symphysis. The glottic exposure for the various-size tori in each location was measured by recording the displacement of the glottiscope tip relative to the most anterior exposure achievable without tori. The glottiscope angle relative to the horizontal plane was measured for each condition. Mandibular tori of more than 10 mm had a significant impact on glottic exposure. Displacement of the glottiscope tip ranged from 2 to 9 mm for anteriorly placed tori and from 7 to 29 mm for posteriorly placed tori, with larger tori causing greater displacement. Increasing the thyromental distance increased the posterior glottiscope tip displacement regardless of torus size or location. The glottiscope angle increased with larger tori (12º to 28º), but this angle did not change with increasing thyromental distance. Larger size and more-posterior location of mandibular tori more significantly reduce glottic exposure during SML. The inner table of the mandible is the most relevant anatomic constraint on glottic exposure, which varies with the presence or absence of mandibular tori independent of thyromental distance.

Neurofibromas plexiformes voluminosos de cuello en la neurofibromatosis tipo 1

AIM. To present the clinic, imaging and evolutive characteristics of a series of patients with neurofibromatosis 1 with voluminous plexiform neurofibromas in the neck (VPNFN) during childhood. PATIENTS AND METHODS. Nine patients (five females and four males) who were diagnosed as VPNFN at ages between 3 and 15 years. The VPNFN widespread to the posterior fossa or the upper thoracic region in some cases. The diagnosis was based on the clinical, imaging and histological findings. RESULTS. One of the tumors was intralaryngeal and caused respiratory difficulties. The other eight patients had the origin of the tumor in several spinal roots of one or both sides and could growth to the posterior fossa and to the upper thoracic region in some cases with displacement of the surrounding organs, especially in three patients, all girls, in whom the tumor reached a voluminous size on one side, that was observed only until 10 to 11 years when the growth ceased. CONCLUSIONS. The VPNFN are histologically benign tumors. Those located in the larynx must be removed because of the respiratory problems, but it is not necessary in cases with other locations despite the voluminous size that can reach in some patients with great displacement of the surrounding organs. The analysis of the results of our series may demonstrate that al least the extralaryngeal tumors only grow to 11-12 years of age. This possibility may make recommendable to retard the surgical treatment as much as possible in cases that it is not necessary.

High-Pressure Synthesis, Crystal Structure, and Phase Stability Relations of a LiNbO3-Type Polar Titanate ZnTiO3and Its Reinforced Polarity by the Second-Order Jahn–Teller Effect

A polar LiNbO3-type (LN-type) titanate ZnTiO3 has been successfully synthesized using ilmenite-type (IL-type) ZnTiO3 under high pressure and high temperature. The first principles calculation indicates that LN-type ZnTiO3 is a metastable phase obtained by the transformation in the decompression process from the perovskite-type phase, which is stable at high pressure and high temperature. The Rietveld structural refinement using synchrotron powder X-ray diffraction data reveals that LN-type ZnTiO3 crystallizes into a hexagonal structure with a polar space group R3c and exhibits greater intradistortion of the TiO6 octahedron in LN-type ZnTiO3 than that of the SnO6 octahedron in LN-type ZnSnO3. The estimated spontaneous polarization (75 μC/cm(2), 88 μC/cm(2)) using the nominal charge and the Born effective charge (BEC) derived from density functional perturbation theory, respectively, are greater than those of ZnSnO3 (59 μC/cm(2), 65 μC/cm(2)), which is strongly attributed to the great displacement of Ti from the centrosymmetric position along the c-axis and the fact that the BEC of Ti (+6.1) is greater than that of Sn (+4.1). Furthermore, the spontaneous polarization of LN-type ZnTiO3 is greater than that of LiNbO3 (62 μC/cm(2), 76 μC/cm(2)), indicating that LN-type ZnTiO3, like LiNbO3, is a candidate ferroelectric material with high performance. The second harmonic generation (SHG) response of LN-type ZnTiO3 is 24 times greater than that of LN-type ZnSnO3. The findings indicate that the intraoctahedral distortion, spontaneous polarization, and the accompanying SHG response are caused by the stabilization of the polar LiNbO3-type structure and reinforced by the second-order Jahn-Teller effect attributable to the orbital interaction between oxygen ions and d(0) ions such as Ti(4+).

Propagation history of the Osaka-wan blind thrust, Japan, from trishear modeling

Mapping the nucleation and 3D fault tip growth of the active Osaka-wan blind thrust provides an opportunity to asses how reactivated thrusts build slip from preexisting faults and the threat they pose as sources of large earthquakes. Analysis of folded growth strata, based on 2D trishear inverse modeling allows a range of best-fit models of the evolution of slip and propagation of the fault to be defined. The depth of the fault tip at 1200 ka varies between ∼1.5–4.5 km, suggesting the fault grew upward from high in the crust, and that it is reactivated. From its onset at ∼1500 ka, the fault grew rapidly along strike in ∼300 ky, and upwards with a P/S ratio of 2.5–3.0, but variable fault slip in space and time. Shallower depths of the fault tip at initiation and thinner basin fill correlates with slower propagation with time, contradicting models that argue for sediments as inhibitors of fault growth. Results also suggest the displacement profile of the currently active thrust is offset from its predecessor, assuming shallower depths to the original fault correlate with greater displacement in its prior history. These results suggest reactivated faults may accrue slip differently than newly developed ones, based on the history of upward fault propagation.

A biomechanical comparison of anterior cruciate ligament suspensory fixation devices in a porcine cadaver model

BackgroundSuspensory fixation use during anterior cruciate ligament reconstruction has increased due to ease of use and high pullout strength. We hypothesize that there are no significant differences in biomechanical performance among four types of suspensory fixation devices: Stryker VersiTomic G-Lok, Smith & Nephew Endobutton, Biomet ToggleLoc, and Arthrex RetroButton. MethodsForty fresh frozen porcine femurs and flexor digitorum profundus tendons were obtained. Each tendon graft was sized to 8.5mm or 9.0mm. Ten of each device were used to fix the grafts in the femur at the 2 o'clock (left) or 10 o'clock (right) position. The graft–femur complex was secured to a servohydraulic test machine in line with the femoral tunnel. The graft was cyclically loaded from 50 to 250N for 1000cycles at 1Hz then loaded to failure at 20mm/min. Actuator load and displacement were recorded. Data were analyzed with multiple one-way ANOVA and Tukey HSD post-hoc tests. Bonferroni correction was applied resulting in P≤0.005 considered statistically significant for ANOVA, P≤0.05 for Tukey. FindingsThere were no significant differences in cyclic displacement among any of the groups (P=0.43). The only significant difference in failure properties is the Endobutton exhibited at least 50% greater displacement at failure than the other three devices. InterpretationSuspensory femoral soft tissue fixation devices are biomechanically similar with respect to failure load but differ in failure displacement. However, there was no significant difference in displacement after cyclic loading. All four fixation devices should withstand the forces associated with daily activities without failure.

Biomechanical Analysis of Bone Healing at One-Plate and Double-Plate Fixation of Femoral Bone Fractures

The present paper present describes so-far unsolved issues of the biomechanics of the bone - plate stabiliser system functioning in a multi-plane system. The few available publications treat this question selectively and often generally. There are no reports which would provide data on the influence of the geometry of a Polfix type plate stabiliser system on the speed of the long bones synostosis process. Clinical practice shows that using an improperly selected fixation system and inappropriate biomechanical stabilisation conditions leads to an inappropriate course of the synostosis process. On the basis of distortion vector maps, the location of the system's rotation centre was determined. In the case of a one-plate fixation, its smaller rigidity and thus greater displacement in the fracture crack, makes it possible for rotation and lateral displacement to occur. This leads to shearing of the newly forming bone tissue. In the case of a two-plate fixation, the system's rotation centre is located in the fracture crack. This is the area where approximation of bone fractures takes place. The distribution scheme of the distortion vectors on the surface of the model shows that the system's rotation centre is located in the fracture crack, and axial approximation of the fixed fragments occurs in this area. Movements of such a type in the fracture crack stimulate callus formation.

Outside-In Continuous Suturing Is Superior to Interrupted Suturing for Repairing Peripheral Meniscus Lesions: An In Vitro Biomechanical Study Using a Porcine Model

This in vitro biomechanical study using a porcine model compared peripheral longitudinal vertical meniscus lesion (PLVML) outside-in suture repair fixation strength using either interrupted or continuous "N" configuration No. 2-0 braided polyester sutures. Porcine lateral menisci were randomly assigned to group 1 (continuous) or group 2 (interrupted). Standardized PLVMLs were created in each specimen. Repaired specimens were placed in a specially designed clamp and loaded into a servohydraulic device. Specimens underwent preconditioning for 10 cycles (0.1 Hz, 5 to 20 N) and 500 submaximal loading cycles (0.5 Hz, 5 to 20 N), before load-to-failure testing (12.5 mm/s). A 30-second pause after preconditioning and after 10, 100, and 500 submaximal loading cycles enabled standardized digital photographs to be taken for gapping measurement determination. The failure mode was documented. Displacement and gapping during preconditioning and submaximal loading cycles did not differ between groups. Group 1 withstood a greater failure load (mean, 118.3 N; 95% confidence interval [CI], 97.2 to 139.4 N) than group 2 (mean, 63.7 N; 95% CI, 51.2 to 76.2 N) (P < .0001) and displacement during load-to-failure testing (mean, 5.3 mm; 95% CI, 4.2 to 6.5 mm) than group 2 (mean, 3.2 mm; 95% CI, 2.1 to 4.3 mm) (P = .005). Group 1 failed by suture breakage or suture pulling through tissue, whereas group 2 primarily failed by knot slippage (P < .0001). Group displacement and gapping differences were not observed after 500 submaximal loading cycles. PLVMLs repaired with a continuous N configuration, however, withstood greater load at failure and greater displacement before failure than repairs that used interrupted sutures. Continuous suture in an N configuration may improve PLVML repair fixation strength.

Real-time positioning algorithm for variable-geometry air-assisted orchard sprayer

An algorithm for positioning of spraying arms based on laser scanner measurements for a variable-geometry air-assisted orchard sprayer is proposed. Functioning of the algorithm is presented for a real sprayer intended for experimental spraying in orchards, which has three hydraulically movable spraying arms that cover one side of a row of trees. The developed algorithm is based on realtime measurements of tree canopies from a laser scanner mounted on the sprayer. According to the measured canopies of trees the spraying arms move linearly and angularly in a plane perpendicular to the row so that spraying nozzles which are located at the ends of the arms are optimally positioned. The algorithm calculates the optimal position for each of the three height segments of a tree (each covered by one arm) based on a simplified contour of the measured canopy of the corresponding row section. Inside the height segments the contour is simplified with a linear approximation using the least-squares method. The optimal position for each arm is then calculated so that the nozzle is directed normally to the linear fit of the contour at a distance for which full coverage of the tree height segment is achieved. The coverage is calculated with consideration of the spray angle. Due to sometimes great displacements between positions in consecutive time steps, calculated positions in each time step may not always be reachable in a real operation of the sprayer. Such great displacements are mainly a result of variable growth of trees and angular sensitivity of the algorithm. The latter is expressed when a change in the contour shape causes a changed direction of a normal which further on causes a change in the position of the arm. This change of position can be interpreted in relation to the change of the contour shape as amplified proportionally to the distance between the arm and the linear fit. To obtain physically feasible displacements, calculated positions were smoothed using the unweighted moving average. The effect of moving average width is also described in the results.With more target-directed spraying it is expected that the drift and ground deposits of pesticides can be reduced. In addition, more effective spraying enables changes in the effective dose, resulting in smaller amounts of pesticides used.

Online maintenance of life domains: Uses of social network sites during graduate education among the US and international students

Students who pursue graduate degrees often do so under the burden of great geographic displacement. This study takes a uses and gratifications approach to examining the usage of Social Networking Sites (SNS) by both American and international graduate students studying at an American university. Specifically, it examines how SNS are used in relationship maintenance with friends and family, news consumption from one’s home state or country, political expression, and social and political transition to one’s new home. Our findings suggest that geographic and physical displacements do not always influence students in maintaining relationships via social media.

Seismic interpretation of tectonic and paleogeomorphologic controls on sediment dispersal patterns in a continental rift basin: A case study from the Bohai Bay Basin, China

Tectono-paleogeomorphologic frameworks exert a major control on sediment dispersal patterns and types of depositional systems, both of which influence reservoir geometry and quality. In this study, we analyze the framework of the [Formula: see text] Member of the Dongying Formation in QHD29-2 Block, Bohai Bay Basin, China. The framework is constructed through (1) conventional sedimentologic study of single-well facies, cumulative frequency curves, and thin section analysis, (2) seismic stratigraphic interpretation of sectional seismic facies, and (3) seismic sedimentologic mapping through stratal slicing and seismic multiattribute analysis. The structural system is marked by a master boundary fault in the Shijiutuo Uplift that has greater displacement at its center than at the propagating fault tips. The resulting paleogeomorphologic architecture is characterized by a steep slope in the central part of the boundary fault and two gentle slopes at fault tips. Sediment dispersal patterns indicate that fan-shaped and lobate proximal fan deltas were rapidly deposited in the central steep slope and belt-shaped distal river deltas were deposited in the gentle slopes after long-distance transport. Proposed sediment dispersal patterns for the central fault segment and the propagating fault tips should serve as a useful reference for the stratal geometry, depositional patterns, distribution of depositional facies and of potential reservoir and source rocks, and evaluation of hydrocarbon reservoirs in extensional rift basins in eastern China and similar basins around the world.